HISTORY OF COMPUTING

Everything You Want To Know About Computing

What Is A Computer?

A computer is an electronic device that can receive information in a particular form. It is also capable of performing different operations and to produce a result in the form of information or signals.

All About Input Devices

In computing, an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance.

input devices

Here is a list of input devices:

  • Keyboard.
  • Image scanner.
  • Microphone.
  • Pointing device.
  • Graphics tablet.
  • Joystick.
  • Light pen.
  • Mouse.
  • Optical.
  • Pointing stick.
  • Trackball.
  • Webcam.
  • Soft cam.
  • Refreshable braille display.

output devices

here is a list of output devices:


  1. Monitor
  2. Printers (all types)
  3. Plotters
  4. Projector
  5. LCD Projection Panels
  6. Computer Output Microfilm
  7. Speaker
  8. Headphones/earphones

both input and output devices

here is a list of input and output devices:


  1. Modems
  2. Network cards
  3. Touch Screen
  4. FAX
  5. sound card
  6. audio card

CPU meaning

CPU stands for central processing unit and it is the main core of a computer. CPU is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, and input/output operations of the system.

RAM meaning

RAM (random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor. RAM is much faster to read from and write to than the other kinds of storage in a computer, the hard disk, floppy disk, and CD-ROM. However, the data in RAM stays there only as long as your computer is running. When you turn the computer off, RAM loses its data. When you turn your computer on again, your operating system and other files are once again loaded into RAM, usually from your hard disk.

power supply meaning

A power supply is a component that supplies power to at least one electric load. Typically, it converts one type of electrical power to another, but it may also convert a different form of energy - such as solar, mechanical, or chemical - into electrical energy. A power supply provides components with electric power.

network card meaning

The NIC contains the electronic circuitry required to communicate using a wired connection or a wireless connection . A network interface card is also known as a network interface controller, network adapter, or Local Area Network (LAN) adapter.

graphics card meaning

Graphics cards are printed circuit boards that control the output to display screens.

motherboard meaning

a printed circuit board containing the principal components of a computer or other device, with connectors for other circuit boards to be slotted into.

hard drive meaning

a disk drive used to read from and write to a hard disk.

what is binary code?

a coding system using the binary digits 0 and 1 to represent a letter, digit, or other character in a computer or other electronic device.

how to read binary code

Remember, these are eight character blocks of 1s and 0s. Here's a fairly easy way to convert any letter into a binary number. Grab a calculator, find the ASCII decimal value for the letter, from the chart above, then look at the binary number chart for the nearest value to the decimal value

alan turing

alan turing was born on the 23 june 1912 and he died on the 7 june 1954. he

was a pioneering English computer scientist,mathematician, logician, cryptanalyst and theoretical biologist. He was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general purpose computer.

During the Second World War, Turing worked for the Government Code and Cypher School (GC&CS) at Bletchley Park, Britain's codebreaking centre. For a time he led Hut 8, the section responsible for German naval cryptanalysis. He devised a number of techniques for breaking German ciphers, including improvements to the pre-war Polish bombemethod and an electromechanical machine that could find settings for the Enigma machine. Turing played a pivotal role in cracking intercepted coded messages that enabled the Allies to defeat the Nazis in many crucial engagements, including the Battle of the Atlantic; it has been estimated that this work shortened the war in Europe by as many as two to four years

what is a network

A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media.

bus network

A bus network is an arrangement in a local area network (LAN) in which each node (workstation or other device) is connected to a main cable or link called the bus.

An advantage is that the bus station is really easy to install and the disadvantage is that if the main cable fails, the entire network fails.

star network

Star networks are one of the most common computer network topologies. In its simplest form, a star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages.

ring network

A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travel from node to node, with each node along the way handling every packet. the advantage is that transmission of date is really simple and the disadvantage is that if a cable breaks the whole network breaks