An upgaded version of the SAP-1 (Simple As Possible) 8-bit computer. Its architecture was proposed by Albert Paul Malvino in 1977 in his book "Digital Computer Electronics", and a series of YouTube videos documenting the building process of the computer was created by Ben Eater in 2016-2018.

My version, compared to the original architecture, contains more memory, an input register and an Arduino board interface. This is my final high-school ECE project.

• 1 Hz - 1.35 kHz clock (adjustable frequency with manual pulse mode)
• 8-bit processing, memory and output
• 128 byte RAM
• 8-bit word input
• Quad 7-seg display for output
• I/O interface with Arduino
• 15 instructions (including NOP), option for 113 more (128 possible instructuions).

Project architecture

SAP-1 original architecture

• Work Log
• A more detailed work log in Hebrew

• Ben Eater's videos on the SAP-1
• Digital Computer Electronics - Albert Paul Malvino (Page 140)

Since this is a personal school project, this repository will be used mainly for documentation. However, comments, advice and contribution are welcome (I'm just not sure how many pull requests I'll actually take).

This repository is under MIT license, meaning you can do anything you want with it. If you want to replicate this for a school project of your own, I'm not responsible for any accusations of plagiarism (especially if you live in Israel and want to replicate this for a 5 units electronics project like me. Be careful.)