Computer -Important Points
1- Flip Flop circuit is used as a ‘Memory device’ in computers.
2- Time during which a job is processed by the computer is Execution Time.
3-Microprocessor was introduced in Fourth generation of computer.
4- ROM is non-volatile.
5-Any data or instruction entered into the memory of a computer is considered as Input
6- In order to tell Excel that we are entering a formula in cell, we must begin with an operator such as =
7-Fifth generation computers are based on Artificial Intelligence.
8-The basic architecture of computer was developed by John Von Neumann.
9-SMTP protocol provides e-mail facility among different hosts.
10-Scanner is a light sensitive device that converts drawing, printed text or other images into digital form.
11- In Windows operating system move the insertion point to the beginning of the previous word – Shortcut CTRL+LEFT ARROW
12-In Windows operating system CTRL+SHIFT with any of the arrow keys- Highlight a block of text
13- In Windows operating system SHIFT with any of the arrow keys – Select more than one item in a window or on the desktop, or select text in a document
14- In Windows operating system move the insertion point to the beginning of the next paragraph – Shortcut CTRL+RIGHT ARROW
15-Punched cards were first introduced by Herman Hollerith
16-Word length of a Personal Computer is 8 bits.
17-Modem device is required for the Internet connection
18-John Napier developed logarithm in 1614