FUNDAMENTAL OF COMPUTER
COMPUTER FUNDAMENTALS Computer A computer is an electronic device that performs arithmetic and logical operations. Arithmetic operations include addition, subtraction, multiplication, and division. Logical operations include AND, OR, and NOT. A computer: Accepts input from the user Processes the input Produces output as a result Computers are widely used in communication and have played a major role in the development of Information Technology . Characteristics of a Computer The main characteristics of a computer are: 1. Speed A computer works at very high speed. It can execute millions of instructions per second . Speed is measured in Hertz (Hz) such as: KHz (Kilohertz) MHz (Megahertz) GHz (Gigahertz) Modern computers perform calculations in nanoseconds . 2. Accuracy A computer is an accurate machine . It performs calculations correctly if the input data is correct. Errors usually occur due to wrong input , not because of the compute...