SC134 is a simple LED output module designed for RC2014.

If you want to fit a zero insertion force (ZIF) socket you might like to consider this strategy.

SC132 is a two channel asynchronous serial port module designed for the RC2014 bus.

Today, I finally received the batch of PCBs I’ve been waiting for from China since January 14.

SC130 is an easy to build, low cost, Z180 RomWBW Computer. The kit comes complete with serial adapter, USB cable, and a micro SD card adapter. Just add a micro SD card for storage and a computer running terminal software, and you have a complete system able to run CP/M software.

SC128, a modular backplane for the Z50Bus, is now available. Details here.

SC129 is a digital I/O module designed for the RC2014 bus.

In part 1 of this series we took a very quick tour through the whole process of designing a product. In part 2 and part 3 we designed the electronics for a digital I/O module. We will now design the circuit board.

In part 2 of this series we started designing the electronics for our digital I/O interface. In this part we will complete the schematic.