Owner`s manual

26 X 38 4- 127 in the following
manner. Note that you need to
use a * rather than an X symbol
for multiplication:
When you
type:
The top line
of the screen
shows:
27
Calculator
Calculator
38 Calculator
+ Calculator
127 Calculator
fENTER) Calculator
27
* 27
* 38
+ 1026
+ 127
1153
In addition to the numeric
keypad, the Tandy 200 calculator
has these special keys:
fBKSP)—deletes the last
character
fSHIFTlDELI—deletes the last
entry
rsHlFTKDEU twice—deletes
the entire operation
(ENTER]—enters or continues
a calculation
GD—adds (same as ®)
CB—subtracts (same as Q)
CD—multiplies (same as C*D)
CD—divides
All other keys are "locked out"
while the calculator is on. Turn
off the calculator by pressing
(BREED. Turn off the numeric
keypad by releasing (NUM].
You can use the Tandy 200
calculator at the Main Menu or
while running any of the Tandy
200 programs. It will have no ef-
fect on the program you are
running.
Turning Off the Tandy 200
When finished using the Tandy
200, simply press the Power
Switch (but be sure to leave the
Memory Power Switch on). If
you forget to turn off the power,
the Tandy 200 waits 10 minutes
and then turns it off for you.
Keeping Information Safe in
Memory
The next chapters show how to
store information in the Tandy
200's RAM. The Tandy 200's in-
ternal battery keeps this informa-
tion in RAM even when the
power is off. Make sure this in-
ternal battery never dies:
• Never turn off the Memory
Switch on the bottom of the
Tandy 200. This turns off the
internal battery. We suggest
that you put tape over this
switch so nobody turns it off:
•o c
.©
1
9
c >.
(I
s
• If you need to let the Tandy
200 sit idle for more than 5-15
days, be sure that it has bat-
teries in it and that these bat-
teries are not dead. The Tandy
200's internal battery needs
some kind of power source so
that it can keep itself charged.
Starting Up / 5