HP48/HP95 calculator connector

#Connectors#Other
4 pin HP48 calculator special connector pin-out & layout

4 pin HP48 calculator special connector  at the calculator

PinNameDirDescription
1---
2TXDOUTTransmit Data
3RXDINReceive Data
4GND-Ground

HP 4S Scanner connector

JTAG Header for FPGA/CPLD Applications (Comcom Electronics Standard)