出典:国際連合
Demographic research depends heavily on electronic data processing 1 using the computer 2. The term hardware 3 refers to the physical component, whereas software 4 supplies the user 5 with ways to have access to the computer. Computer specialists 6 include programmers 7 who write programs 8 conceived by system analysts 9. More...
出典:Wikipedia
出典:『Wikipedia』 (2011/07/22 01:04 UTC 版)
The slide rule, also known colloquially as a slipstick, is a mechanical analog computer. The slide rule is used primarily for multiplication and division, and also for functions such as roots, logarithms and trigonometry, but is not normally used for addition or subtraction.