Copyright Graham Knott 1999
| DIGITAL CIRCUITS |
| LOGIC GATES | AND GATES | OR GATES |
| MULTIVIBRATORS | NOT GATES | EXCLUSIVE OR |
| NOR GATES | BINARY | NAND GATES |
| BISTABLE AS DIVIDER | THE 7490 DECADE COUNTER | BINARY/7 SEGMENT DECODER |
| HEXADECIMAL |
Copyright Graham Knott 1999