FLIP-FLOP
\flˈɪpflˈɒp], \flˈɪpflˈɒp], \f_l_ˈɪ_p_f_l_ˈɒ_p]\
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By Princeton University
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A digital logic circuit that can be in one of twostates which it switches (or "toggles") between undercontrol of its inputs. It can thus be considered as a one bitmemory. Three types of flip-flop are common: the SRflip-flop, the JK flip-flop and the D-type flip-flop (orlatch).Early literature refers to the "Eccles-Jordan circuit" and the"Eccles-Jordan binary counter", using two vacuum tubes asthe active (amplifying) elements for each bit of informationstorage. Later implementations using bipolar transistorscould operate at up to 20 million state transitions per secondas early as 1963.
By Denis Howe
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international pitch
- the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C