Content for 74LS161


The LS161A is a high-speed 4-bit synchronous counters. It is edge-triggered, synchronously presettable, and cascadable MSI building blocks for counting, memory addressing, frequency division and other applications. The LS161A count modulo 16 (binary.) The LS161A have an asynchronous Master Reset (Clear) input that overrides, and is independent of, the clock and all other control inputs.

Vectron VGA Plus

“Vectron VGA Plus is a VGA graphics adapter that can interface with retro computers or microcontrollers. How It Works I previously built a massive 7400-logic based VGA generator called Vectron VGA. While it was a nice project to build, it …

SAP-1 Processor Architecture

“A simple 8-bit micro-processor using mostly discrete logic chips. This project is mostly based on the 8-bit Breadboard computer by Ben Eater Banner Specs ~400 Hz Clock 8-bit Data Bus 16-bit Control Word 5 Microsteps per Instruction 16 byte RAM …

Build an 8-bit computer from scratch

“I built a programmable 8-bit computer from scratch on breadboards using only simple logic gates. I documented the whole project in a series of YouTube videos and on this web site. “