This article throws light upon the top fourteen input devices used in a computer. Some of the input devices are: 1. Punched Cards Input 2. Paper Tape Input 3. Magnetic Tape 4. Magnetic Disk 5. Disc Systems (Floppy) 6. Winchester Disk 7. Keyboard 8. Terminals 9. Mark and Character Recognition 10. Optical Mark Reading (OMR) 11. Optical Character Recognition (OCR) [...]
This article throws light upon the top five output devices used in a computer. The output devices are: 1. Printers 2. Visual Display Units (VDU) 3. Plotters 4. Computer-Output-to-Microfilm (COM) Units 5. Audio Output. Output Device # 1. Printers: Printers may be classified as: Also as: (i) Serial Printers: (a) Daisywheel Printer: Daisywheel printer is so called because it uses [...]
The computer user does not usually need to be able to perform binary arithmetic, but some understanding of binary arithmetic is a useful background for understanding computers. Here, in this article, the rules for each of the four basic arithmetic operations of addition, subtraction, multiplication and division will be explained and illustrated for the binary system. 1. Binary Addition: Rules [...]