Instruction manual

VLF1 • 8
 1 Red LED (D2)
 1 4004 silicon diode (D1)
Miscellaneous
 1 Pushbutton Switch (S1)
 3 RCA Jacks (J1, J2, J3)
 1 Power Jack (J4)
 1 4MHz quartz crystal (X1)
 1 36 AWG wire for T1
 1 Plastic tuning screwdriver
 1 Ferrite core for T1
Now, let's get building!
Since you may appreciate some “warm-up” soldering practice as well as a
chance to put some “landmarks” on the PC board we’ll first install some
“hardware” components. This will also help us to get acquainted with the up-
down, left-right orientation of the circuit board.