bits

Necessary Items

Power your Arduino/AVR with a Hand-Cranked Battery using ATmega8 microcontroller

If you’ve ever wanted to power your Arduino or AVR from a battery for development testing (batteries have different power delivery qualities than, say, transformed AC or even a regulated wall wart in DC) testing but were tired of going through batteries (Hey, I admit I’ve sucked batteries dry in hours because of a slipped-up …

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TWO BITS PER TRANSISTOR: HIGH-DENSITY ROM IN INTEL’S 8087 FLOATING POINT CHIP

The 8087 chip provided fast floating point arithmetic for the original IBM PC and became part of the x86 architecture used today. One unusual feature of the 8087 is it contained a multi-level ROM (Read-Only Memory) that stored two bits per transistor, twice as dense as a normal ROM. Instead of storing binary data, each …

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