Computer Devices and Their Inventors: Computer Knowledge section holds its importance and is considered as the easiest section for candidates who put little efforts on this section from the first day of their preparation.
| Device Name | Inventor |
| Compact Disk or CD | James Russell in 1965 |
| Computer Mouse | Douglas Engelbart in 1964 |
| First laptop | Grid Compass 1100 and was designed in 1979 by a British industrial designer, Bill Moggridge |
| First PC | IBM 5100 Portable Computer by IBM |
| Floppy Disk | Alan Shugart & IBM |
| Hard Disk | The IBM Model 350 Disk File by IBM in 1956 |
| Integrated Circuit | Jack Kilby & Robert Noyce in 1958 |
| Key board | Herman Hollerith first keypunch devices in 1930’s |
| Laser printer | Gary Starkweather at XEROX in 1969 |
| Microprocessor | Intel 4004 Computer Microprocessor – Faggin, Hoff & Mazor in 1971 |
| Operation System | Gary Kildall (CP/M (Control Program for Microcomputers) and Bill Gates of Microsoft (MS-DOS) |
| RAM | An Wang at Harvard University’s Computation Lab and Jay Forrester at MIT in 1951 |
| Trackball | Tom Cranston and Fred Longstaff in 1952 |
| Transistor | John Bardeen, Walter Brattain & Wiliam Shockley in 1947 |
