| 释义 |
ˈnanosecond
(see nano-)
[f. nano- + second n.1]
A unit of time equal to one thousand-millionth of a second.
1959W. C. G. Ortel in IRE Trans. Electronic Computers III. 265 (heading) Nanasecond logic by amplitude modulation at X band. [Note] Although the term millimicrosecond has attained some currency, the metric system provides the standard prefix nano-, (abbreviated n-), by which the decimal multiplier 10—9 may be denoted conveniently without multiple prefixes. 1960Times 17 Feb. 2/6 Pulses of nanosecond duration are being studied by means of fast recording techniques and spectrographic methods. 1964Evening Standard 30 Oct. 19/3 The latest computers are now doing their sums in ‘nano-seconds’... According to General Sarnoff, former head of the Radio Corporation of America, ‘A nano-second is to a second what a second is to 30 years’. 1966[see giga-]. 1967New Statesman 14 July 47/3 It takes a nanosecond for an electric signal to travel a foot. 1968Dataweek 24 Jan. 1/3 The 9400 would appear to be slower than the IBM System/360 Model 25 (memory cycle of 600 nanoseconds per two bytes against IBM's 180 nanoseconds per 64 bytes) but faster than the ICT 1902A (3 microseconds per 24-bit word). 1972Sci. Amer. Jan. 121/1 Present atomic clocks keep time to better than 100 nanoseconds per day. |