In this project, solutions to second order linear recurrence equations with constant coeffi- cients have been investigated. We have used generating functions to derive the general solution to the homogeneous equation and we show that in general the particular solution is complicated to find. By limiting the right hand side (RHS) in the equation to a polynomial-exponential family of functions we c
Introduction
최초의 컴퓨터?
Not UNIVAC 컴퓨터
But 전자식 컴퓨터 ABC
→미국 법원의 인정
컴퓨터의 발전은 The Great World WarⅡ → 탄도 계산 등의 군사적 목적
‘진공관’의 사용 및 입력장치를 위한 천공카드
진공관은 발열량↑, 수명↓, 전력소모↑, 크기↑
First Generation
ABC 컴퓨터
Atanasoff-Be
generation unit. The first stage is the coal gasification process as mentioned above. The second stage takes the cleaned gas and burns it in a conventional gas turbine to produce electrical energy, and the hot exhaust gas is recovered and used to boil water, creating steam for a steam turbine which also produces electrical energy. In typical plants, about 65% of the electrical energy is produced
Ⅰ. 개요
컴퓨터산업의 발전과정을 이해하는 것은 매우 중요한 일이다. 왜냐 하면 지난 수십년 사이에 일어났던 많은 사건들이 현재의 상황과 미래에 발생할 상황에 영향을 미치기 때문이다. 이러한 계산기구가 등장하기 이전의 인류는 손이나 나무막대기 또는 돌을 사용해 수를 세거나 서로의 의사를
The principle survey target
Smart phone users in Kookmin Univ.
More easier to do the communication activity
Increase the frequency of the communication activity
The use of smart phone has been increasing significantly
Recognition about the international news, cultural and information exchange