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STD Ben Eater 8- Bit Computer with Modifications
Mode: Editors' pick
- 17
Update time：
2021-11-03 15:10:04
Creation time：
2017-08-22 17:18:17
Description
These are the schematics for Ben Eaters 8-Bit Computer. Modifications have been, or will be made, so that the memory is 256 Bytes instead of 16.
You can find part lists on ben Eaters website: https://eater.net/
Design Drawing
schematic diagram
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Computer Clock
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8-Bit Program Counter
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A Register
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B Register
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Memory Adress Register and Memory
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General Overview
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ALU-Multiplication
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ALU-Addition and Subtraction
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ALU-Equal Logic
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ALU-Alternative Magnitude Comparasion
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Control Unit
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ALU-Register
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Data Register
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Output
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 1k | R1,R2,R3,R4,R5 | AXIAL-0.3 | 5 |
| 2 | 1M | R7 | AXIAL-0.3 | 1 |
| 3 | 0.01uF | C1,C2 | RAD-0.1 | 2 |
| 4 | 0.1uF | C4,C5 | RAD-0.1 | 2 |
| 5 | 1uF | C6 | RAD-0.1 | 1 |
| 6 | -LM555 | U3,U2,U1 | DIL08 | 3 |
| 7 | SN74LS04N Inverter | U5,U2,U1,U3,U4 | DIP14 | 5 |
| 8 | SN74LS08N AND | U6,U1,U5,U7,U8,U2,U9,U10,U4 | DIP14 | 9 |
| 9 | SN74LS32N OR | U4,U1,U11,U3 | DIP14 | 4 |
| 10 | 1M | R9 | RES-ADJ_3386P | 1 |
| 11 | 6*6*12SMD Tactile Switch | SW4 | KEY-6.0*6.0 | 1 |
| 12 | EG1218 | SW1 | SW3-2.5-11.6X4.0X5.4+2.0MM | 1 |
| 13 | 204-10UYC/S530-A3 | LED9,LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED16,LED8,LED10,LED11,LED12,LED13,LED14,LED15,LED17,LED18,LED19,LED20,LED21,LED22,LED23,LED24,LED25,LED26,LED27,LED28,LED29,LED30,LED31,LED32 | LED-3MM/2.54 | 32 |
| 14 | SN74LS173AN | U1,U2,U3 | DIP16 | 3 |
| 15 | 74LS245N | U5,U7,U3,U2 | DIP20 | 4 |
| 16 | 74LS161N | U8,U9,U1 | DIP16 | 3 |
| 17 | UPD43256BGU-70L | U1 | NONE | 1 |
| 18 | HD74LS83AP | U1,U3,U4,U2 | DIP16 | 4 |
| 19 | SN74LS86AN | U3,U4 | DIP14 | 2 |
| 20 | SN74LS85N | U1,U2 | DIP16 | 2 |
| 21 | CAT28C16AL-20 | U2,U3,U4,U5 | DIP24-600 | 4 |
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