As the name implies the digital computer with quantities represented as digits. In digital computer, both numeric and non-numeric information are represented as string of digits. In digital computer, the input is discrete in nature. It is represented by binary notation in the form of 0’s and 1’s. Digital computer are much faster than analog computers and for more accurate. Digital computers are largely used for business and scientific applications. The basic operation performed by a digital computer is addition. Hence, the other operations such as multiplication, division, subtraction and exponentiation are first changed into addition and then computed. A digital signal consists of discrete voltage levels, a light pulses, that represent either binary 1 or a binary 0.
Posts Tagged ‘computer’
Digital Computers
September 25th, 2009Compare the Computer with Human being
July 28th, 2009The computer is an electronic device where we can store large amount of information that can be retrieved in any desired manner or in any form, processed in required form and can be utilized to carryout complicated mathematical and logical operations with speed and accuracy. So, the main objective of computers can be compared with human being and with calculators, but there are so many limitations in case of human being and computers. The computer system can be compared with human being. The computer can perform any arithmetic task with high speed which a man cannot perform. The advantage of using computers is that it can execute tasks with more accuracy and speed.
Introduction to Computers
July 21st, 2009Computers are high speed calculating device. In fact, the main objective of inventing the computer was to create a fast calculating machine. But now a day’s more than 75% of non-mathematical or non-numerical work is carried out by the computers. Hence the definition of computer merely as calculating device is to ignore over 75% of its work. The use of Information technology is well recognized. This has become must for survival of business houses with the grouping information technology trends. Computer is one of the major components of an Information technology network and gaining increasing popularity. Today, computer technology has fulfill every sphere of existence of modern man, from Railway reservation to medical diagnosis, from TV programs to satellite launching, from Match-Matching to Criminal catching, everywhere we witness the elegance, sophistication and efficiency possible only with the help of computers.
