Computer,

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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

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