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v. t. e. In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent ...
Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Nodes in the peer-to-peer bitcoin network verify transactions through cryptography and record them in a public distributed ledger, called a blockchain, without central oversight.
U.S. Army Signals Intelligence Service personnel at Arlington Hall (c. 1943) A DIA office at Arlington Hall Station (c. 1970s). Arlington Hall was founded in 1927 as a private post-secondary women's educational institution, which, by 1941, resided on a 100-acre (0.40 km 2) campus and had acquired the name "Arlington Hall Junior College for Women."
Dual 16-bit, 1.6-GSPS, TxDAC+ D/A Converter Synthesizes High-Quality Wideband Signals from Baseband to High Intermediate Frequencies ADI's AD9142 D/A converter features a proprietary low spurious ...
Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...
Unicode, formally The Unicode Standard, [ note 1] is a text encoding standard maintained by the Unicode Consortium designed to support the use of text in all of the world's writing systems that can be digitized. Version 15.1 of the standard [ A] defines 149 813 characters [ 3] and 161 scripts used in various ordinary, literary, academic, and ...
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January 2008; 16 years ago. ( 2008-01) Current status. Defunct. A coupon-eligible converter box ( CECB) was a digital television adapter that met eligibility specifications for subsidy "coupons" from the United States government. The subsidy program was enacted to provide terrestrial television viewers with an affordable way to continue ...