What is a Computer System?
A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
An optical disc is an electronic data storage medium that can be written to and read from using a low-powered laser beam.
A central processing unit, also called a central processor or main processor, is the electronic circuitry within a computer that executes instructions that make up a computer program.
What is a Graphics tablet?
A graphics tablet is a computer input device that enables a user to hand-draw images, animations and graphics, with a special pen-like stylus, similar to the way a person draws images.
What is difference between Hardware and software?
Computer hardware is any physical device used in or with your machine, whereas software is a collection of programming code installed on your computer\\
Explain Dot Matrix Printer.
Dot matrix printing, sometimes called impact matrix printing, is a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout.