An Introduction to Bits

Brendan Massey
9 min readJun 18, 2021

A computer has — stored within it — millions or even billions of minuscule devices called transistors. These transistors detect the presence — or absence — of voltage and return a value of 0 — if it detects the absence of voltage — or 1 — if it detects the presence of voltage. These 0 and 1 values are known as a bit. The word: bit can be expanded to [b]inary dig[it]. Looking inside the brackets will yield the letters for the word: bit.

These transistors don’t detect whether there is absolutely 0 voltage going to it or any amount of voltage; but rather, these transistors detect levels of…

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Brendan Massey

I write about programming and computer science as well as review Coursera courses I have taken related to the aforementioned topics.