No. 114 BAEC December 1994 Newsletter
- Designers Notes 11:
7217 Presettable U/D Counter IC driving x4 7-Segment Displays with x4 BCB Thumbwheels input. By Alf Dension.
-
Beginner's Notebook 3 - switching the Mains using low voltage circuits.
By Alf Denison.
-
Microcomputer Interfacing 2 by Dave Rowntree. Uses an example Zilog Z80 Processor to:
- Input from a 16 Key keypad.
- Drive a Binary-to-7-Segment-Display Decoder Chip like the
CMOS 4511.
- Drive the much more advanced 8255 PIA (Perihpheral Interface Adapter) which has three 8-bit Ports.
