Does anyone have an idea about early computers? The age before Microcontrollers/ Microprocessors? I have just now completed a project that takes me into that time.
This is an 8-bit Minimum Computer (AKA Simple As Possible Computer - SAP) that made from simple logic ICs, flip-flops and a few memory modules. It has a memory of 16 bytes and its maximum clock speed is not more than 5 Hz.
The whole design is based on SAP-I Architecture and design was obtained from Ben Eater’s Youtube Channel . Currently, it has 9 instructions (based on Intel 8080 instructions) and can be programmed it using machine language (That means programming from 1s and 0s)
The project was started as a project for CO221: Digital Design Course, Department of Computer Engineering, University of Peradeniya.
All the Printed Circuit boards were designed from the basics by us using Fritzing, fabricated by using the CNC, Builder_V3 and soldered and assembled by us. It took 2 months to complete the fabrications and another month for build motherboard (30x40cm) and debugging.
The project is free and open source under Apache License 2.0.