PTM(Programmble Timer Module)
Programmable Timer, 3 Timer(s), NMOS, PDIP28, PLASTIC, DIP-28
HD63B50P Cmos Acia (asyncronous Communication Interface Adapter) With 1.5 Mhz Clock Frequency
Processor 28-PIN DIP
HD63B45P
Integrated Circuit Microprocessor 63B40/HD63B40RP HITACHI
