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113
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103
NEDONAND is 8-bit homebrew computer entirely built out of many 74F00 chips (2-input NAND gates)
Project Owner Contributor

NEDONAND homebrew computer

SHAOS

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41.9k
users
211
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102
This project is an attempt to teach myself about the inner workings of computers. Naturally I started from the bottom up.
eye
19.2k
users
165
comment
8
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92
After the apocalypse we have to build computers from stuff we can make at home, I.E Transistors, diodes and resistors.
Project Owner Contributor

AYTABTU - Discrete Computer

matseng

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29.7k
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123
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5
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Creating the worlds first 32 bit homebrew CPU using 74' series logic.
Project Owner Contributor

Worlds first 32 bit Homebrew CPU

Phil Wright

eye
7.5k
users
257
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65
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My goal is a 4-bit CPU using recycled cardboard substrate and Diode Transistor Logic. This will develop into an educational platform for me.
eye
11.8k
users
132
comment
27
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65
ED-64 will be an 8-bit computer built with discrete components, and will feature a ferrite core memory (documented as a separate project).
eye
4.8k
users
92
comment
3
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53
Another DIY 4-bit computer
Project Owner Contributor

Fourbit

jaromir.sukuba

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9.2k
users
58
comment
10
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a 16-bits YASEP computer (mostly) made of DIP/SOIC chips like in the 70s and 80s... with 2010's twists!
Project Owner Contributor

Discrete YASEP

Yann Guidon / YGDES

eye
8.1k
users
248
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24
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50
A computer invented, designed and built from scratch.
Project Owner Contributor

A2Z Computer

f4hdk

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1.4k
users
168
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14
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48
Fork of #AMBAP, here I discuss about the physical implementation of the bitslice architecture with russian РЭС15 (see what I did here?)
eye
7.4k
users
48
comment
5
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"Just because": The single-board microcomputer that runs without a microprocessor
eye
3.1k
users
23
comment
18
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41
Trying to unify and simplify a minimal architecture for various implementation technologies...
eye
3.8k
users
39
comment
5
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39
A minimal 8 bit TTL CPU using 1970s technology
Project Owner Contributor

Weird CPU

agp.cooper

eye
3.8k
users
77
comment
3
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36
Each custom CPU is a stack machine. Parallel computation is via shared memory. I wrote a stack language compiler for the CPU.
eye
6.8k
users
34
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23
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Let's imagine I could get about 200 SPDT relays. Of course I would know what to do with them :-D But will 200 be enough ?
eye
6.5k
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89
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[Redesign]: A 16 bit RISC processor built with a logic simulator
Project Owner Contributor

16-bit CPU built in Logisim

Reed Foster

eye
1.9k
users
37
comment
15
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Scientific calculator with a brain built out of relays.
Project Owner Contributor

RISC Relay CPU

roelh

eye
3.2k
users
35
comment
15
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27
Document and create a modern replica of the Harwell Dekatron computer known as the WITCH
eye
5.2k
users
33
comment
11
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27
A usable 4 bit TTL CPU
Project Owner Contributor

4 Bit TTL CPU

agp.cooper

eye
1.2k
users
326
comment
9
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25
A relay computer on hat rails Big loud relays, Turing complete, NO f**king diodes
Project Owner Contributor

Relay Computer

Paul Kocyla

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1.8k
users
28
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5
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23
Synchronous All-Purpose Minimal Instruction Reckoning Apparatus
Project Owner Contributor

S.A.M.I.R.A. MK-II

menguinponkey

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987
users
21
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0
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22
A 16-bit CPU, with 16 registers, described in 66 lines of code - with HDL, emulators and a macro assembler.
Project Owner Contributor

OPC-5 - a CPU for FPGA, in one page

BigEd

eye
1k
users
17
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3
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I am building a (currently) 64k RAM computer with an FPGA. Now with lots of pipelining!
Project Owner Contributor

FPGA computer

Dylan Brophy

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3k
users
25
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1
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19
An 8-bit load-store CPU with 2 pipeline stages, designed in Logisim and implemented in VHDL + assembler written in Python
Project Owner Contributor

muCPU: an 8-bit MCU

Reed Foster

eye
3k
users
20
comment
3
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18
Simple 4-bit CPU consisting of 11 TTLs. Circuit is duplicated from the one in a Japanese book "how to make CPU", "CPUの創りかた"
Project Owner Contributor

TTL based 4-bit CPU

kodera2t

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968
users
98
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0
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14
Building a computer from scratch
Project Owner Contributor

epRISC Open Computer

John C. Lemme

eye
1.3k
users
19
comment
11
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13
A breadboard-able computer which uses only a single instruction - MOVE
Project Owner Contributor

One-instruction TTL Computer

Justin Davis

eye
946
users
15
comment
7
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12
Brainfuck computer on reed relays with Von-Neumann arch
Project Owner Contributor

Brainfuck relay computer

Artem Kashkanov

eye
293
users
12
comment
5
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12
My goal is a 4-bit CPU using recycled cardboard substrate and Diode Transistor Logic. This will develop into an educational platform.
eye
1.5k
users
14
comment
8
skull
11
Taming the 74LS181 ALU chip
Project Owner Contributor

The 74LS181 ALU

agp.cooper

eye
557
users
117
comment
0
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11
A concept for a small RPN processor with interesting features
Project Owner Contributor

CPU7

KnivD

eye
796
users
11
comment
4
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11
This is my fourth home brew CPU
Project Owner Contributor

CPU4

agp.cooper

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699
users
14
comment
4
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11
An educational 16-bit CPU made from < 1000 transistors with lots of LEDs that anyone can build and learn from
Project Owner Contributor

NanoCPU.org

Tony Robinson

eye
381
users
6
comment
4
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10
16-bit computer system featuring a custom-designed CPU
Project Owner Contributor

LEO-1 Homebrew CPU

John Croudy

eye
477
users
11
comment
3
skull
10
Bit serialized ARM Cortex Processor
Project Owner Contributor

Kortex-S Processor

Antti Lukats

eye
498
users
520
comment
0
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8
a configurable 16-32 bits MPU in VHDL for tiny FPGA
Project Owner Contributor

microYasep

Yann Guidon / YGDES

eye
350
users
9
comment
6
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8
A one-page CPU: spec, HDL, emulator and macro assembler each in one page. Fits in XC9572 CPLD.
Project Owner Contributor

OPC-1 CPU for CPLD

BigEd

eye
479
users
5
comment
7
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8
DME is 16-bit custom CPU complete with a full software stack and a multi tasking, multi user operating system.
Project Owner Contributor

16-bit 'modern' homebrew CPU

ErwinM

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549
users
9
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0
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6
I have a lot of random spare parts doing nothing and a need to make them do things...
Project Owner Contributor

Detritus, the 8-bit ... computer?

Jorj Bauer

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824
users
12
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0
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6
Yet Another Minimalistic One Instruction CPU SUBLEQ means SUBtraction jump on Less than or EQual to zero.
Project Owner Contributor

A SUBLEQ CPU

agp.cooper

eye
208
users
6
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0
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5
Ideas about using single throw relays for computing, and working prototype circuits.
Project Owner Contributor

Single throw relay computing

will.stevens

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216
users
7
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2
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5
I am designing an 8-Bit Computer completely from scratch out of Logic Gates, using only my basic knowledge of how a computer works.
eye
1.2k
users
8
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0
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4
JACA - Just Another CPU Again Homebrew CPU, starting by a simple POC 4-bit CPU on circuit simulator soft. (done), then 8-bit (in progress)
Project Owner Contributor

JACA 1 & 2 Homebrew CPU

Andre Baptista

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105
users
5
comment
6
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3
A CPU with any number of bits. Uses 74181 and other ttl logic gates
Project Owner Contributor

SBP-CPU (Slice Based Processor)

Dylan Brophy

eye
511
users
205
comment
0
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3
A 16bit single cycle RISC processor suporting R format I format BEQ and JMP format.
Project Owner Contributor

16bit RISC Processor

Shashi Suman

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339
users
5
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3
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3
Built this experimental version of the MINIVAC 601 computer from PDF's on the net. Time to completion about 4 months.
Project Owner Contributor

HOMEBREW MINIVAC 601 COMPUTER

Wverish