Clive W. Humphris

**LOGIC GATES 1: Simple OR Logic Function. **

The OR logic function can be clearly demonstrated using two push switches connect in parallel. Press S1 OR S2 and the lamp is lit.

If both switches are closed the lamp, as you would expect remains on. The only state, which extinguishes the lamp, is when both switches are open. Replace logic 0 for an open switch and logic 1 for a closed switch.

- Table of Contents
- Interactive eTextbooks
- Computer Hardware
- Data Structures
- Data Files
- Computer Systems
- Data Handling
- System Development
- Computer Programming
- Binary Numbers
- Binary Arithmetic
- Logic Gates 1
- Logic Gates 2
- Logic Families
- Flop Flops
- Combinational Logic
- Counters
- Counting
- Shift Registers
- Logic Interfacing
- Boolean Algebra
- Micro-Computers
- Data Address Bus
- Memory Addressing
- Arithmetic And Logic Unit
- Microprocessor Timing
- Instructions and Control
- Memory Cells
- Microprocessor Memory
- Addressing Modes
- Instruction Set 1
- Instruction Set 2
- Instruction Set 3