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content/notes/02-combinatorial-logic.md
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@ -62,10 +62,16 @@ Creating boolean equations:
![simple transistor diagram|100](https://i.imgur.com/oBuNR9m.png) ![simple transistor diagram|100](https://i.imgur.com/oBuNR9m.png)
- B: Base ⇒ A swtich connecting C to E - B: Base ⇒ A swtich connecting C to E
- c - open (C is disconnected from E) when supplied 0v
- closed (C is connected to E) by applying +5V
- C: Collector - C: Collector
- E: Emitter - E: Emitter
Possible to create NAND gate using just transistors ∴ possible to create all logic gates using only transistors [^3]
# Demultiplexor
- Mutli way swtich where the address determines which output recieves the input
- [2 bit address diagram and truth table](https://i.imgur.com/XQteI3j.png)
# Logic Gates # Logic Gates
- NOT - NOT
@ -79,4 +85,5 @@ Creating boolean equations:
[^1] : In real circuits propagation delay must be considered, hence the clock cycle on CPUs [^1] : In real circuits propagation delay must be considered, hence the clock cycle on CPUs
[^2] : The Apollo Guidance Computer used about 5600 NOR gates and no other gate types! [^2] : The Apollo Guidance Computer used about 5600 NOR gates and no other gate types!
[^3] : They dont actually do it this way (see lab)