Hardware devices with their invention dates
1. A router
Router is a network device used to interconnect more than two computers sharing the internet. It was first invented in the year 1974 and named as Xerox router.
2. Repeater
This is a device that amplifies attenuated signals being transmitted over a wide area and distance. It was invented in the year… (Not sure of the year. Anyone who knows, please comment)
3. Mouse
This is a pointing computer device and was invented by Douglas Engel in the year 1964.
4. Printers
This is a printing tool that enables document in software form be produced and printed into a hard copy. It was first invented in the year 1953 by Remington Rand. Printers are of different types such as the laser, ink jet, impact, and solid printers, among others.
5. Keyboard
This is a computer-typing external device that transmits direct electric signals to the computer. It was invented in the year 1868 by Christopher Latham.
6. LAN cable
This is a Local Area Network data transmission device used for interconnecting two or more computers. There are different types of LAN including the shielded and unshielded, coaxial and untwisted pair cable among others. It was first invented in the year 1973 by Robert Metcalf.
7. Network switch
This is a central connection device that contains addresses of all the computers and is used to specifically send data to the intended computer. It was first invented in the early 1920s.
8. Hub
This is also a central connecting device like the switch but it is does not contain the address of all connected computers and it does the broadcasting of data. It was invented by Robert Metcalf in 1980s
9. Bridge
Is a network connecting device that interconnects several network segments at the data link layer. It was invented in the 1980s by Larry G. Roberts.
10. Network interface cards
This is a network device that establishes network connection between two computers by receiving and sending data signals.
11. PC Modems
This is a network device that provides internet connectivity by modulation-demodulation processes. It was invented by Dennis Hayes and Dale Hetherington in 1977.
12. CPU
This is a computer-processing unit that does all the execution of codes and commands from the machine hardware and the software. There are different types of central processing unit but the first one was invented in the year 1971 by Intel.
13. RAM
This is Random Access Memory which temporarily acts as a computer storage device for currently used data and can be accessed by the CPU .It was invented by Robert Heath Dennard in 1968.
14. Fax machine
This is a machine that encodes data by transmitting signals over the telephone line and obtaining the hard copy of the signals. It was invented by Alexander Bain in 1980s.
16. LCD SCREENS
These are flat-screened devices which provide visual display by transforming light generated from liquid crystals. LCDs was invented by James Ferguson in1972.
17. Hard disks
This is a secondary computer storage device and was invented on September 13, 1956 by the IBM team led by Rey Johnson.
18. Motherboard
This is the main integrated circuit that forms a computer and provides slots for the addition of other external peripherals. It was invented by the IBM in 1981.
19. CRT monitors
These are image displaying devices that are produced in form of desktop computers and television sets. It was invented by Ferdinand Braun in 1897.
20. Web cam
This is a device that transmits digital pictures through the internet. It was invented by Cambridge University in 1991.
