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#ram#74ls189#breadboardcomputer

8-bit computer RAM intro

Ben Eater

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  • Recommended by 2 people: 2 in engineering communities.
  • Presented by Ben Eater

Intermediate. Assumes working knowledge.

341K views10 years ago2 recommendations

HardwareSystems programmingCPUs and computer architectureElectronics

Ben Eater explains how a 16-byte static RAM works and introduces the 74LS189 chip used to build it.

An introduction to the 16-byte by 8-bit static RAM that we're going to build for our 8-bit computer. Support me on Patreon: patreon.com/beneater Previously we built a 1-bit register: youtu.be/-arYx_oVIj8 Next we extended that to build an 8-bit register: youtu.be/CiMaWbz_6E8 In this video, we extend that further to describe how a 16-byte static RAM would work. Then we take a look at the 74LS189, which we'll use to build our computer's RAM. See eater.net/bbcpu8-ram for more.

Why it's here

2 people recommend this

What people say. Recommended as an excellent, highly visual explanation of low-level computer memory and hardware architecture.

u/CavemanKnucklesin r/compsci • Recommends

On “Need Resources for Computer Orgnization & Architecture”

Ben Eater has a fantastic channel with explanatory videos on different low level computer architecture concepts. He even has a breadboard 8 bit computer he built out of logic circuits, like he made the ALU and everything. This is his video on RAM design link to this video
4View on Reddit

u/Cuddlefluff_Grimin r/programming • Recommends

On “My younger brother is learning to code and wrote this post about how computer memory works”

It skips the important part - the circuitry
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