close-circle
Close
Following
eye
18.6k
users
118
comment
29
skull
105
NEDONAND is 8-bit homebrew computer entirely built out of many 74F00 chips (2-input NAND gates)
Project Owner Contributor

NEDONAND homebrew computer

SHAOS

eye
43.2k
users
215
comment
22
skull
104
This project is an attempt to teach myself about the inner workings of computers. Naturally I started from the bottom up.
eye
20.1k
users
169
comment
8
skull
96
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

eye
31.7k
users
130
comment
5
skull
95
Creating the world's first 32bit homebrew CPU using 74' series logic.
Project Owner Contributor

World's first 32bit Homebrew CPU

Phil Wright

eye
8.1k
users
297
comment
65
skull
84
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
15k
users
79
comment
9
skull
72
"Just because": The microcomputer that runs without a microprocessor
eye
12.3k
users
134
comment
27
skull
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
5k
users
92
comment
3
skull
54
Another DIY 4-bit computer
Project Owner Contributor

Fourbit

jaromir.sukuba

eye
8.7k
users
252
comment
27
skull
53
A computer invented, designed and built from scratch.
Project Owner Contributor

A2Z Computer

f4hdk

eye
9.5k
users
59
comment
10
skull
53
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
1.5k
users
193
comment
14
skull
47
Fork of #AMBAP, here I discuss about the physical implementation of the bitslice architecture with russian РЭС15 (see what I did here?)
eye
3.2k
users
23
comment
18
skull
41
Trying to unify and simplify a minimal architecture for various implementation technologies...
eye
3.9k
users
40
comment
5
skull
39
A minimal 8 bit TTL CPU using 1970s technology
Project Owner Contributor

Weird CPU

agp.cooper

eye
3.9k
users
77
comment
3
skull
36
Each custom CPU is a stack machine. Parallel computation is via shared memory. I wrote a stack language compiler for the CPU.
eye
7k
users
34
comment
23
skull
33
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
6.8k
users
90
comment
5
skull
32
[Redesign]: A 16 bit RISC processor built with a logic simulator
Project Owner Contributor

16-bit CPU built in Logisim

Reed Foster

eye
3.8k
users
38
comment
15
skull
29
Document and create a modern replica of the Harwell Dekatron computer known as the WITCH
eye
2.1k
users
37
comment
16
skull
29
Scientific calculator with a brain built out of relays.
Project Owner Contributor

RISC Relay CPU

roelh

eye
5.5k
users
33
comment
11
skull
27
A usable 4 bit TTL CPU
Project Owner Contributor

4 Bit TTL CPU

agp.cooper

eye
1.3k
users
353
comment
9
skull
25
A relay computer on hat rails Big loud relays, Turing complete, NO f**king diodes
Project Owner Contributor

Relay Computer

Paul Kocyla

eye
1.9k
users
28
comment
5
skull
23
Synchronous All-Purpose Minimal Instruction Reckoning Apparatus
Project Owner Contributor

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

menguinponkey

eye
1.1k
users
21
comment
0
skull
23
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
1.2k
users
18
comment
3
skull
20
I am building a (currently) 64k RAM computer with an FPGA. Now with lots of pipelining!
Project Owner Contributor

FPGA computer

Dylan Brophy

eye
3.3k
users
26
comment
1
skull
20
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
2.2k
users
20
comment
10
skull
19
Von-Neumann 16-bit relay computer with Brainfuck++ instruction set
Project Owner Contributor

Brainfuck relay computer

Artem Kashkanov

eye
3.2k
users
20
comment
3
skull
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

eye
2k
users
23
comment
11
skull
17
A breadboard-able computer which uses only a single instruction - MOVE
Project Owner Contributor

One-instruction TTL Computer

Justin Davis

eye
1k
users
99
comment
0
skull
15
Building a computer from scratch
Project Owner Contributor

epRISC Open Computer

John C. Lemme

eye
739
users
16
comment
4
skull
14
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
361
users
12
comment
5
skull
12
My goal is a 4-bit CPU using recycled cardboard substrate and Diode Transistor Logic. This will develop into an educational platform.
eye
831
users
11
comment
4
skull
11
This is my fourth home brew CPU
Project Owner Contributor

CPU4

agp.cooper

eye
1.8k
users
15
comment
8
skull
11
Taming the 74LS181 ALU chip
Project Owner Contributor

The 74LS181 ALU

agp.cooper

eye
588
users
117
comment
0
skull
11
A concept for a small RPN processor with interesting features
Project Owner Contributor

CPU7

KnivD

eye
441
users
6
comment
4
skull
10
16-bit computer system featuring a custom-designed CPU
Project Owner Contributor

LEO-1 Homebrew CPU

John Croudy

eye
451
users
10
comment
6
skull
10
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
496
users
11
comment
3
skull
10
Bit serialized ARM Cortex Processor
Project Owner Contributor

Kortex-S Processor

Antti Lukats

eye
598
users
6
comment
7
skull
9
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

eye
556
users
563
comment
0
skull
8
a configurable 16-32 bits MPU in VHDL for tiny FPGA
Project Owner Contributor

microYasep

Yann Guidon / YGDES

eye
1.8k
users
13
comment
0
skull
8
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 Computer

Andre Baptista

eye
677
users
11
comment
0
skull
8
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

eye
902
users
12
comment
0
skull
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
215
users
6
comment
0
skull
5
Ideas about using single throw relays for computing, and working prototype circuits.
Project Owner Contributor

Single throw relay computing

will.stevens

eye
230
users
7
comment
2
skull
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
408
users
5
comment
3
skull
4
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

eye
137
users
5
comment
6
skull
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
563
users
263
comment
0
skull
3
A 16bit single cycle RISC processor suporting R format I format BEQ and JMP format.
Project Owner Contributor

16bit RISC Processor

Shashi Suman