8bit CPU - https://eater.net/8bit/parts

partlist.md

⚠️ I have not finished the project, therefore I do not yet know if anything is missing.

Main Parts

Part	Link	Notes
Wires	-
3 Double-throw toggle switch	-
up to 3 RPI Header Pins	reichelt.de	Optional, but some components (switches) don't fit securely into the breadboard
14 Breadboards	reichelt.de	The breadboards are pretty inexpensive, but they are the only brand available. So far they worked for me.
ℹ️ 220Ω 10 1kΩ 9 10kΩ 1 100kΩ 24 470Ω 1 1MΩ resistor	reichelt.de	ℹ️ 220Ω current limiting resistors are not ben's partlist
1 1MΩ potentiometer	reichelt.de	Use RPI-Header A bit hard to turn, because of the smooth metal dial Without Header-Pins, only 2 Contacts fit (loosely) into the Breadboard.
6 0.01µF 16 0.1µF 1 1µF capacitor	reichelt.de (Foil) reichelt.de (Foil) reichelt.de (Foil) reichelt.de (Ceramic) reichelt.de (Ceramic) reichelt.de (Ceramic)	Ben uses ceramic capacitors I used the Foil capacitors, because the look nicer, but they are HUGE and a bit tricky to fit on the clock module. Rest should be fine though
3 555 timer IC	reichelt.de	ICs have 2 555-timers each.
2 74LS00 (Quad NAND gate)	reichelt.de
1 74LS02 (Quad NOR gate)	reichelt.de
5 74LS04 (Hex inverter)	reichelt.de
3 74LS08 (Quad AND gate)	reichelt.de
1 74LS32 (Quad OR gate)	reichelt.de
2 74LS86 (Quad XOR gate)	reichelt.de
1 74LS138 (3-to-8 line decoder)	reichelt.de
1 74LS139 (Dual 2-line to 4-line decoder)	reichelt.de
4 74LS157 (Quad 2-to-1 line data selector)	reichelt.de
6 74LS245 (Octal bus transceiver)	reichelt.de
1 74LS273 (Octal D flip-flop)	reichelt.de
3 Momentary 6mm tact switch	reichelt.de	Use RPI-Header seems to be fine with one pair of pins
1 8-position DIP switch	reichelt.de
1 4-position DIP switch	reichelt.de
44 Red LED	reichelt.de
8 Yellow LED	reichelt.de
12 Green LED	reichelt.de
21 Blue LED	reichelt.de
4 Common cathode 7-segment display	reichelt.de	⚠️ The parts list says common-cathode, but the video mention using common Anode
2 74HC 595 (used for the arduino eeprom programmer)	reichelt.de
2 74LS161 (4-bit synchronous binary counter)	amazon.de
8 74LS173 (4-bit D-type register)	amazon.de
2 74LS283 (4-bit binary full adder)	amazon.de

Substitute parts

Original	Actual	Link	Note
2 74189 (64-bit random access memory)	6264-70	reichelt.de	The RAM is much bigger and 8bits wide, instead of 2 4bit-wide chips Does not need the Inverters
3 28C16 EEPROM	28C64-150 EEPROM	reichelt.de	The EEPROM is much bigger too
1 74LS107 (Dual JK flip-flop)	74LS109	reichelt.de	I did not use them, because I only found them after I already ordered

Modifications

Upgrade	Part	Link	Note
RAM Upgrade	4 74LS107 (Dual JK flip-flop)	reichelt.de	Idea Phase
RAM Upgrade	1 74LS157 (Quad 2-to-1 line data selector)	reichelt.de	Idea Phase
RAM Upgrade	1 8-position DIP switch	reichelt.de
RAM Upgrade	1 74LS173 (4-bit D-type register)	amazon.de	Idea Phase (included in original parts)
Register/BUS LEDs	10 stackable LEDs	reichelt.de	Ordered
Register/BUS LEDs (Plan B)	48 small LEDs	reichelt.de	Ordered