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Meaning of BLT

 
Computing Dictionary
 
 Definition: 

1. /B-L-T/, /bl*t/ or (rarely) /belt/ Synonym for blit. This is the original form of blit and the ancestor of bitblt. It refers to any large bit-field copy or move operation (one resource-intensive memory-shuffling operation done on pre-paged versions of its, waits and tops-10 was sardonically referred to as "The Big BLT"). The jargon usage has outlasted the pdp-10 BLock Transfer instruction from which blt derives; nowadays, the assembly language mnemonic blt almost always means "Branch if Less Than zero".

2. bacon, lettuce and tomato (sandwich).

[jargon file]

 

 

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