o Introduction = “Thank-you for purchasing the JD-7000. Before trying to use . be sear to read this instruction manual carefully. Then Keep this manual in a safe place. sa you can refer to i wherever you need to do so. The JD-7000 can produce display messages in any one of ten languages: English. Spanish. [Italian. German, French, Danish, Swedish, Dutch, Finnish, and Portuguese.” All of the display messages shown In this manual are i English.
e Table of Contents Chapter 1. Features and Functions Telephone Directory Modes .. Schedule Mode Calendar Mods . Data Memo "Diary” Mode . Secret Memory Area Timekeeping Mode Alaric Mode Conversion Mode Fortune Tet ling Medea Match Maker Mode Carmen Mode .. Magic Beam Mode . Calculator Mode Data Communication Function . Chapter 2. Before Using the JD-7000.. General Precautions .
Chapter 8. Schedule MAGE .ovrrericcrsremsrrrenen E-38 elude Mode . Entering Schedule Data . Specifying a Date Stung a0 Leon . Describing the Event Specifying the THEE Pressing C/CLR or AC/ON. Scheduling an Alar's . Automatic Sorting Appointment Markers Recalling Schedule Data. Chapter 7, Calendar Mode ...coed. Entering the Calendar Mode To move the Data Crosscut . Highlighting Dates Removing Highlighted Dates . Chapter 8. Data Memo “Diary” Mode Creating & Data Memo Pressing C/CLR or AC/C Automatic Sorting .
sel Messages . Registering Your Own Data Things to check for if you b using Magic Beam. Chapter 18. Calculator Mode . Entering the Calculator Mode Corrections About Calculation Calculation Examples Chapter 19. Technical B-113 Memory Capacity Serene LE-113 How memory capacity 1s calloused E-115 Sort Sequence . Error Messages Chapter 20. Data Communication .. Sending Data for & Specific Mode Sending All Data ..
off Secret Memory Area Stores your private thoughts you wish to keep confidential. No one can gai access Lo the Secret Memory Area without knowing your password. Timekeeping Mode Home Time displays the current time where you are, World Time shows the time in any of 28 zones around the globe. You can use 24-hour or 12-hoer format, and can even specify daylight savings time. = Alarm Mode Lets you set alarms to the minute. for alarms to go off every hour, or for a single e each duy.
Chan fer 2 Before Using the JD-7000 Very important stuff Here's where we tell you showing to lose important data stored in memory. Also, be sure 1o perform the all-reset operation before using the JD-7000 for the first time. The all-reset operation is described on page £z Please be sure you understand the following before using the JD-7000. Make back-up copies of important data The electronic memory in the JD-7000 sires and recalls information quickly and easily.
Reset Operations Two kinds of reset operations can be performed: * All reset operation deletes all data in memory, ¢ Secretory operation deletes only your password and the data in the Secret Memory Area. Important! Do nat use a very sharp pencil to press the RESET button.
When the JD-7000 Does Not Work Correctly if the JD-7000 s jolted by a siring electrostatic charge or by sever impact, it may nol work properly. n hues a case. first check to make sure halt the main galleries and back-up battery are correctly Installed, and then perform the following operation. 1. Loosen screw of the small battery compartment ever o the beak of the unit, and remove the back-up battery compartment cover. toss the RESET button with & thin, pointed ohmmeter 4.
Memory contents are lost when both the man batteries and the back-up battery are removed, Be sure always to leave the main batteries or back-up battery in place 1o protect memory contents. 1f, however, you remove the moon batteries for any time, memory retention will depend entirely on ihe condition of the back-up butler. Over a lop period of time with just the back-up battery in place, memory contents are likely to be damaged. f memory seems corrupted.
To replace the back-up battery Switch power off. Lassen the screw of the small battery compartment over on the back of the unit, and remove the back-up battery compartment cover. {(Figure 4] . Remove the old battery. Wipe off 2 new battery with a soft cloth. Then, load If anti the compartment making sure that positive (s) side is facing up fso you can see it} [Figure 5} Insert the tabs on the bottom of the battery compartment cover font the slots of the battery compartment ind carefully close the cover.
wxmmxnuxxnw: Chapter 3 cwwmmn s w xxx General Guide MENU Key Gena Mode Key ARCH Key Timekeeping Mode Key "~ Cursor Kens FUNCTION Key Connector Terminal SHIFT Key AC/ON Key SPACE/Return Key FXE Hey * In this manana, all references to the HOME TIME/ WORLD TIME key are indicated by TIME. £20 Displaying the Main Menu The man menu appears on the display when you switch the power on. Whenever you are viewing any other serene; you can abbeys press MENU fo return (o the main menu.
To change modes: Display the main mem . The icon of the current meed is highlighted o the display. Usc and & to select another menu icon. . When you have highlighted the mode you wish (o select, press BXE, To enter the Timekeeping Mode. press TIME. To enter the Game Mode, press BATTLE. You cannot select these modes from the man mien. Using the FUNCTION Key To view the function menu, press FUNCTION. To elect a function: 1. Use highlight the function you wain fo choose, 2. Press EXE.
To Adjust the Display Contrast 1. Display the main menu. 2. o darken the figures on the display, press A. To make than lighter. press V. To Switch the Key Input Tone On or Off . Display the mat men . Use A, Y. 4, and P to highlight "& . Press EXE. FUNCTION. Then use ¥ to highlight “Sound.” Use 4 and P switch the key roue o and off Press EXE. You can enter letters, symbols, and other characters in Telephone Directory Made, Schedule Mode, Data Memo “Daryl” Mode. Conversion Mode, and Magic Beam Mode.
H you want L0 type many nipper-case (capitalized) lefter press FUNCTION: then use highlight "CAPS: then press EXE. When “CAPS” has been selected, "&Ea” appears on the display. To retain to lower-case lefter. perform the same operation again to cancel “@ To type & single lower-case letter while the display indicates that are in use. press SHIFT before typing the litter: v Always check the status of display indicators when inputting letters. Entering Symbols and Other Characters To type a period, and %.
There is mare than ane screen of choices; i you want to change screens to fend the character quickly. use A and U to change screens. Entering Characters with the CODE Key Anther way to type in foreign language characters is to use the CODE key in combination with other keys. The following table shows the characters that can be typed with the CODE key.
To Delete a Character 1. Use &, ¥, And P to move the curse fate character you want to delete. 2. Press SHIFT. 3, press 4 (DEL). To Insert a Character . Use A. 'Y, €, and P to move the cursor to wherever you wish to insert a character. Press SHIFT. Press P (INS). A single space will appear at ihe corsair position. Type the character you want to insert. There are two Telephone Dietary Modes: school/ business and personal.
Telephone Directory Mode indicator {Businesspersons Medea) AV JACKSON ERI Bergman | o o Telephone Kb T-123-4567 ng""‘ Addie 57@¢ Casio £ T TV Seattle WA Diana Continue Biko T display the data below, pre ‘The display in Telephone Directory Mode Titch shows ably data, and. « display showing a portrait along wish the data, press EXE while the data are displayed.
Use € and P 1o select “Yes” or “No.” Seuss This Face? Yes. [EXE] No. . Ta change the face shown on the display, use A or V. Then press EXE. Use chaise among the various features, Hair g Bags €= Cenobites gmt Eyes €= Nose ¢ Mouth L Bl €mp Mustache -3 (asses 4od Ont line QJ When a feature screen is shown. use € and P to singe the feature. 9. Press EXE 1o store the data.
Recalling Telephone Directory Data There are two ways to recall telephone directory data: = sequential search » initial character search, To recall data using sequential search: 1. Enter the school/business or personal directory made. 2. Use A and 'V to search through your listings, one after another alphabetically. IF you hold down A or T, the JD-7000 will stroll through your directory at high speed. If you have no entries recorded in the directory, the message. “No Record!” will upper on screen.
6o R Schedule Mode Use this mode to plan your schedule of classes. home work appointments, ete. You can record the date, time, and type of appointment for each listing, Dates on which you have scheduled things are automatically marked on ihe calendar (page E-45), Entering the Schedule Mode There are two mat ways to get into the Schedule Made: directly, or through the Calendar Mode. To go directly into Schedule Mode: * On the mat mean, highlight the Schedule Mode icon. Then press EXE.
Icons The Schedule Mode gives you a selection of small images, or icons. o that you can understand at a glaring what appointments you have scheduled for any day. All of the available cans are shown below. When you schedule men, use whatever icon you wish to repress Afii?& x@& S ‘MEMORIZE Hegemony Sesame Delete Icon Sleet this DL icon to delete any other eon from iv our schedule.
Specifying a Date ¢ thing you need to do. in order to schedule that is tell the JD-7000 the date when it will happen. are Lwa ways to do this: Se rolling Direct input To select a date using the scrolling method: « Use A and 7 Lo several past the days until the date you want is displayed. To select a date using the direct input method: [. Press FUNCTION. Then use highlight “Date”. Press EXE. 2. Type in the desired date. within the format you've chosen i Timekeeping Mode {see page E-65).
You don't need to specify sn end time. But, stile we want to do so here, type in 0300, if you are on 12-hour timekeeping. and then press AM/PM until the splay reads *3:00 pm." 1f you are on 24-hour time: keeping, type in 1500, Neither case. afterwards press EXE. “Schedule? will appear on the display. The JD-7000 is asking if vou would like to schedule another appointment, since you're done seedling bis one.
To recall data using daily sequential search: 1. Go into the Schedule Mode. 2. Use & and 7 ta stroll through the days. Holding down tether key lots you scroll at high speed. To recall data using appointment sequential search: Enter the Scheduled Mode. Press SHIFT, then press £ or . This will jump tp the next date on which you have something scheduled. When you've Jumped past the last date with appoint: stents scheduled. e message “Not Found!” will appear on the display.
To view appointment information for any date, move the cursor to flash that date on the calendar. See page £-5 for details on moving the date cursor, Press EXB. The appointment formation for the selected date will be shows. I you wish to view appointment information for other dais, you can press stroll through each day. To recall data using date search: 1. Go into the Schedule Mode. 2. Press FUNCTION. then use highlight “Duse” Press EXE. @ Type i the desired date.
To display a calendar for a specific month: 1. Press FUNCTION, then use A to highlight “Date.” Press EXE. e (g7 1994 “type tn a date. The date format you use depends on what you have already specified in Timekeeping Mode page B-63) Press EXE. The calendar for the month you have specified will appear on serene, with the date cortisol flashing at the date vou hive specified. To move the Date Cursor Use A, ¥, € and P to move the date cursor.
5. 1f you wish to highlight another day, repeat only step 4. 6. To complete day-highlighting. press AC/ON. To highlight the same day every week, fora specific period: Enter the Calendar Mode Press FUNCTION, then use highlight “Holiday Set.” Press EXE. Use ¥ to highlight "Dav of The Week.” Press BXE. Enter the ported during which you want to highlight the same day or days every week. You can chose periods i one-month units. MHo i day Set Period? to Y2/1005 EXE.
SERENENESS 8 Data Memo “Diary” Mode The Data Memo “Diary” Made ells yau store memos that are up to 381 characters long. To enter the Data Memo “Diary” Mode, highlight the Data Memo “Diary” Mode ean in the main menu, then press EXE Memo et HTK TNG TRIP Name JOHN MARY Billhook «TED SUZY AND | WENT HIKING.
Automatic Sorting Data are automatically sorted alphabetically by the mitral letters entered as the Memo Name, See the table on page E-116 for the sort sequence. Recalling Data There are two ways fo recall data: « sequential search « initial character search, To recall data using sequential search: Enter {he Data Memo “Diary” Mode. Use A and V' to search for the dais you want. Holding down A or 7 scrolls at high speed. 1f no data have been stored, “No Record!” will be dis played on serene.
If you store telephone dire troy. schedule, and meme data ln the Secret Memory Area, no one can view this information without entering the right password. A password can clatters long. With the correct password, you ean transfer date back and forth between the Secret Memory Area and the Open Memory Area. To create & Secret Memory Area; 1. On the mam menu, highlight the Secret Memory Area icon.
To enter the Secret Memory Area: To enter the Secret Memory Area, follow the same procedure we just used to create the Sec rel Memory Area. 1f you use the wrong password, the message, “Password Mismatch” will appear on the display, and the password input screen will reappear. Once you're in the Sec rel Memory Area. you can do everything just as you would in the Open Memory Area, But all of the information you put is stored i the Secret Memory Area, available only to those wha know the password.
x-llxltx %&h&phg Mode You may have noticed the HOME TIME/WORLD TIME Ley ou the JD-7000. We'll fever to it simply as tile TIME key throughout this manual Home Time shows you the current date and ime where vou Rive, while World Time Displays the current date and time in one of 29 time zones. around the world. The Timekeeping Mode also lets you specify any of three formats for the date. Entering the Timekeeping Mode To enter the Timekeeping Mod, press TOMB.
Setting the Home Time Zone The initial Home Tine zone setting produced by the all-reset operation {see page E-12) Is known around the world as Greenwich Mean Time or Universal Time. 1t is the time zone that includes London, England. ¥ you live in any other time. zone. you'll probably want to change the Home Time zone setting. To change the Home Time zone: 1. Press TIME until the display shows Home Tine. 2. Press FUNCTION. Then use W to highlight “Zone Change.
Press FUNCTION. Then use A or ¥io highlight “Date Format.” Press EXE. Use highlight either “Month/Day/Year. or "Year/Morth/Day.” These determine the order in which the JD-7000 will always show the date. When you have chosen the setting you prefer. press EXE. Setting the World Time Zone The initial World Time zone setting produced by the all-reset personal (see page E-12) is U.S. Eastern Standard Time. 1t is the time zone that includes New York City.
City Code Table The fallowing table shows all of the city codes used by the JD-7000. the name of each corresponding city, and the time difference between each citronella and Greenwich Mean Time. Time City Name | Differ Other Cities in Zone enc Midway HNL | Honolulu 10 Anchorage o9 Los Angeles [-08 | San Francisco, Seattle, Lis Vegas Denver ~07 | Bl Pan Chicago Sailfish, Mexico City, Houston, New York Washington 11.C..
To set an alarm time: 1. Enter the Alarm Mode, 2, Press FUNCTION. Use A to highlight “Alarm Time Set.” Press EXE. Alarm NEW YORK 120 . “Predesignated time. For example, for 7:30, ype: 07 30 Use nave the flashing detail selector, If you are using the 12-hour format, be sure 1o speechify pressing AN/PM. Press EXE. The alarm will automatically switch on. By sating the alarm zone. you can sel an alarm for another time Zane, This may help you male a long-distance phone call, for example. ul an agreed-upon time.
O The JD-7000 is programmed to calculate the six currency conversions Shawn helot. You will have (o enter the current rates for these con versions, though. since they change frequently. Once you have entered the current bate, you can calculate conversations with the tans of a key. You can also edit the names fees page B-79]. Built-In Currency Conversions Built-in Rates §1. =505 $ 1. = Lit 1000/ $ 1. =DM15 $ 1= Ps 100 $ 1. = FFr 100, For information about programming in currency converters not shown here.
To convert U.$. dollars into foreign currency: Enter the Conversion Mode. Use the A and ¥ keys to choose the conversion you need. Far example, choose U.S. dollars into French francs. The display will show the stared value for this conversion: the preset vale hire I3 $1 = FFY. Type in the amount in U.S. dollars that you wish lo convert to foreign currency. To continue aur example, say vou want o convert $98.50 to French francs. Type: 98,5 Then press EXE. 3 e s FFr To convert foreign currency into U.S.
o R Gfi@t&' 18w wan Data Editing Use the procedures described here to edit your telephone directories, schedule, memos, and currency names, Re member halt you must access e Secret Memory Area to edit data stored there. To edit data: Enter the mode that contains the data you want ta edit. Use the search Eruptions to recall the data you want to edit. Press FUNCTION, then use highlight "Edit.” Press EXE, @I will appear on the display and the cursor will appear at the beginning of the data. Use A.
I you select "Delete” in step 3, an on-screen message will ask you are sure you want to delete the Fun Face. Selecting “Yes" deletes the Fun Face, Selecting "No™ cancels the delete operation. Make any changes that you like and press EXE to store the changed data. Changing a Schedule To change a Schedule Mode date: Enter the Schedule Mode Use the search functions to recall the data you want to edit, Press FUNCTION. Use & and ¥ to highlight “Edit” ‘Then press EXE. * will appear on screen. Press FUNCTION.
The first currency halt you can now change is the one {0 the left, dollars. But we don't want to singe that, so press EXE without entering anything. 1f yau don't want to change the highlighted currency name, simply press EXE. Now the cursor has moved to allow yon to change the other currency name. This Is the name you'd like to change, to accomplish our goal of changing German marks into Mexican pesos. You can enter up toi four letters for such currency name, That's convenient for our example. Type “MEX.
5. When the deletion Is completed, one of the following will appear on the screen; * a prompt for new data input « other data for whatever mode you arc in. To delete all data in a specific mode: Enter the mode which contains data you want to delete. Press 2 and V o display data. Press FUNCTION. Then use A and W o select "Delete” Press EXE. Lie W to highlight “Mode Data.” Press BXE Use 4 to highlight “Yes.” Then press EXE. Ta abort the delete operation, Highlight “No.” and press EXE.
Ernie the birthday of the person whose fortune is to be told. For sample, someone horn on January 5, 1980. Type: 01051980, Then press EXE. “The date format depends ont how yon have specified that it should appear. See the Timekeeping Mode, |page E-65 Naw type in the date for which you want the fortune, Fot example, type: 10151994, Then press EXE.
Enter the two birthdays of the people whose compatibility is to be checked. For example, someone born on January 5. 1980 and someone born August 25, 1979 Type: 61051980, Then prods EXE Type: 08251879, Press EXE again. The date format depends on how you have specified that it should appear. See Timekeeping Mode, page E-65. The more black hearts that appear.
2. Use A to highlight "v$ COMPUTER" and thee press EXE. CHOOSE WARRIOR SMITH MARGARET COMPUTER" means “versus the compute The names that appear at the bottom of the display are your warriors, The sames LUKE and CINDY are preset, while the others are taken from the Telephone Dir troy. Only the names that include a portray are: used.
Your warrior Computer's warrior Direction of stick The first side to attack is sek If you are attacking, press BXE to start the battle. If your opponent is attacking, the battle starts automatically Battle points Carious battle points and graphic images appear on the display to indicate the result of a battle 1f a battle results jn battle points, those points arc deducted from the ESP of the side being attacked.
When you lose 1f yau have won the last battle. press EXE fo battle the next computer warrior, There are five computer warriors wailing to do battle. If you defeat all five, the following display appears. It you want to step playing part way through. press AC/ON. OFF. BATTLE, TIME or MENU, Game Over ‘The game ends whenever you lose (o the computer br after you defeat the five computer warriors. To switch between directories 1. 2. Press FUNCTION to display the function menu.
I you do not press EXE for about seven seconds. the changing pictures will stop automatically Note that you cannot replenish your ESP power so that it 15 higher than its original level. Any replenishment points that are in excess of your original ESP power level will be wasted. Note Utah the above is not {rue in the case of the maximum of 40,000 replenishment points. 1n titch a case, the 40 000 points are added to your current points, even if the natal is in excess of your original ESP power level.
You can select names from the school/business dire troy or from the personal directory. See “To switch between directories” on page B-92 for details on haw (o change directories when selecting & warrior. ties & and ¥ to move the highlighting to the name you want, and then press EXE, ESP 345080 PK 4800 TP 4500 Set the two JD-7000 units up for Magic Beam communication, Point the two bandits at each other and make sure they are within the paper distance.
+ The shove sequence con titties back and forth until one side wins. Note that you can replenish your ESP power while a battle 15 in progress, For details, see *To replenish ESP power” an page E-95. One of the two following displays appears when the game is over When yon win I you win. press EXE Lo return ta pies 2 to challenge another friend. T you want to stop playing part way through, press AC/ ON, OFF, BATTLE, TIME, or MENU. Game Over ‘The game nods for you whenever you lose.
Switching Sound Effects On and Off Normally, sound effects are switched on when you start a game, You can use the following procedure ta switch the sound effects o and off. To switch sound effects on and off 1. Enter the Game Mode by pressing BATTLE 5. Press ¥ trice o highlight “SOUND ON/OFF.” o Use % and W to switch between ON and OFF. with the Magic Beam Mode you can exchange messages with anther unit® using Infrared light.
There are three different types of data that can be sent swing the Magic Beam Mode: input messages, editable preset messages, and Telephone Directory Mode data. Sending Messages You Input Simply Input the message you want o fut on the JD-TO00's keyboard Example: To send the message "HAVE A NICE DAY” Select the Magic Beam Mode can in the main menu to enter the Magi Beam Mode. Use the keyboard quays to input the message you want 1o send. Type: SPACE A SPACE SHIFT & DAY You can input up to 28 charioteers.
Approximately B enters 18.7 yards] Sending a Preset Message You ean store up to 10 preset messages in memory, for Buick and easy recall when you need them. After you recall a message. you an send it ta anther unit with the touch of a button. + Note that you can also edit preset messages using the procedure on page E-108. Example: To send the preset message “What are yo DOA” Close the Magic Beam Mode icon In the main menu to enter the Magic Beam Mode. Press the A or ¥ key Lo display the preset message list.
7. After the data is sent. the Telephone Directory Mode data display reappears, so yau ean select the next data 10 send, When Telephone Directory Mode data 15 received, the JD-7000 shows the dale on its display. Then you can use A and ¥ 1o serology through the data. and € and P i switch the face on and off, If there is not tighten free memory in the receiving unit, the message “Memory Full” appears.
Things to check for if you nave problems using Magic Beam if hatter power is weak, you have to move the two units closer together 1F the two units are at an angle of more than 20 degrees from each other, you have to move them closer together. I an object blocks the path between the two wits, communication will be impossible.
* You can clear an error and continue with the torrent calculation by pressing C/CLR, You can clear the error along with the current allocations by pressing AC/ON. Corrections « Clear the last enteric entry by pressing the C/CLR key immediately after making the initial entry. arithmetic operator entry correct arithmetic operator key immediately tater making the initial entry. Press AC/ON to clear an entire calculation.
25% discount of 3560 Hot will the selling price nd profit be when the purchasing prove 8480 and 1he profit aver 1o the selling price s 2567 4% mark-down of 130 wa[E]a [z 1 you made $60 last week 100 Z807%] aid 100 this week, what is the percent Merganser? B0 720 B0 50x6= 500 50[X 65 A0x3u 60 20X 480 Memory Capacity Screen Use the following procedures to click the status of the memory. One procedure displays the amount of memory used and the how much memory 1§ remaining.
The memory values shown above are the total for both the Open Memory Area and the Secret Memory Area. v Press AC/ON ta clear the memory capacity scree. To display the number of items in each mode 1. While the main menu is displayed, press FUNCTION. 2.
Sort Sequence The following table shows the sequence used for sorting data in the Telephone Directory and the Data Memo “Diary” Made. 117 118 118 20 12t 1467 & 178 147) A 1176 148 £ 177 149 1 [178 150 178 307 8 |50 31 9|60 a2 et a3l 765 a7l a2l 441G 1|75 47 % 4814 0|81 Q|83 551 R |84 s6!S 85 571 100 i 102 103 104 105 106 107 108 109 110 111 112 113 114 115 118 €116 123 124 152] A 1181 sme N
CASIO's SB-62 Data Communication Cable is available as an option. You can use this ts connect the JD-7000 another JD-7000 unit, or to a CASED JD-5000, SF-AD, or SF-A30 fas of March 1994}, Data can be shared among all of these products. Data Type How received data s stored “Peephole Directory Data Memo “Diary” | Appended to existing data. Schedule Replaces ingratiating. [a reconvert ninth Calendar Jas no highlighting, the highlighting data s the receiving uit is retained as Is.
Sending Data for a Specific Mode You can send either single data item (the smallest packet of data which can be sent in the Calendar Made, for example, is a single month), ot all the data stems stored in a specific mode. Different procedures are used to send all the data in 2 mode, depending on whether you start from within that made, or {rom the man menu. To send one data item: Enter the mode that contains the data; then search for and display the data you wish t send. Press FUNCTION.
Sending All Data Important! The following procedure sends either all Open Memory Area data or all Secret Malory Area data. Before starting to transmit, be sure to a the memory area (Open o Secret) which contains data you wish to send. To send all data: 1. Begin from ether the man menu or from a data display {Telephone Directory. Schedule, Data Memo *Diagram, or Calendar). Press FUNCTION. Then use ¥ to highlight "Communication” Press EXE. Use A to highlight "Send Data.” Press EXE. 4.
25 Model: JD-7000 Telephone Directory Mode Storage and recall of telephone directory data fame, tel phone amber, address, effete. Each item can contact to 380 characters with a Fun Face. Includes secret memory area and auto sol Unction. Schedule Mode Storage and recall of appointments for any date in the range of January 1901 through December 2099. ach item can contain up to 372 characters with an icon. Includes secret memory area and auto sort function.
Power consumption: 0.
