4 lines
625 B
Plaintext
4 lines
625 B
Plaintext
meta bit
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n. The top bit of an 8-bit character, which is on in character values 128--255. Also called high bit , alt bit. Some terminals and consoles (see space-cadet keyboard ) have a META shift key. Others (including, mirabile dictu , keyboards on IBM PC-class machines) have an ALT key. See also bucky bits. Historical note: although in modern usage shaped by a universe of 8-bit bytes the meta bit is invariably hex 80 (octal 0200), things were different on earlier machines with 36-bit words and 9-bit bytes. The MIT and Stanford keyboards (see space-cadet keyboard ) generated hex 100 (octal 400) from their meta keys.
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