| 释义 |
preˈscaler Electronics.
[pre- A. 2.]
A scaling circuit employed to scale down the input to a counting or other scaling circuit so that it can deal with high counting rates.
1954E. H. W. Banner Electronic Measuring Instruments xi. 277 When very short resolving times are essential, it is necessary to use a hard-valve pre-scaler in front of a scaler using these new tubes. 1967Electronics 6 Mar. 152 (caption) The counter is used in pairs as a prescaler. 1972Physics Bull. Feb. 114/1 A new high performance, low priced scaler timer for use in schools and technical colleges... It features a fast (1 µs) prescaler of integrated circuit construction with a bold two digit read out of counts. 1976CB Mag. June 72/2 Because the VHF prescaler is built-in, the decimal point is placed properly on the display. 1977Design Engin. July 81/3 A prescaler extends this range to 800 MHz. |