symbols based on the bit locations.

* In 1972, Ronald O. Whitaker of Rowco Engineering Co. proposed a triangular font that allows "direct binary reading" to "permit both input and output from computers without respect to encoding matrices".
* Some seven-segment display decoder chips (i.e., 74LS47) show unexpected output due to logic designed only to produce 0-9 correctly.

Sign

The hex system can express negative numbers the same way as in decimal, by putting a minus

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