Chips

TTL

74HC74 - Dual D Flip−Flop with Set
and Reset

• 74HC74.pdf

SN54LS393 - Dual 4-Stage
Binary Counter

• SN54LS390.PDF

SNx4HCT138 - 3-Line to 8-Line Decoders/Demultiplexers

• sn74hct138.pdf

PIC MCU

PIC16F84

• Intro: The PIC 16x8x Family, PIC16F84: Everything You Should Know 
• Datasheet: PIC16x84.pdf
• Programming: PIC16F8X_prog.pdf 
• Asm: xq gputils https://gputils.sourceforge.io/
• Simulator: xq gpsim https://gpsim.sourceforge.net/