• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  • Level: GCSE
  • Subject: ICT
  • Word count: 2229

PC input devices - advantages and disadvantages.

Extracts from this document...


Input Devices Keyboard Page 3 Mouse Page 4 Touch Pad Page 5 Tracker Ball Page 6 Joystick Page 7 Video Digitizer Page 8 Digital Camera Page 9 Scanner Page 10 Remote Control Page 11 Magnetic Stripe Reader Page 12 Sound Sensor Page 13 Mild Instrument Page 14 This useful device is one of the main and most commonly used input devices. This device is attached to the computer and is used for writing on the computer. The typical keyboard used by most people is the 'QWERTY' keyboard. It is called 'QWERTY' as these are the first letters in the first row. There are newer keyboards with different designs but most people are familiar with the 'QWERTY' keyboard. A man called Sholes in 1878 developed this keyboard layout. It was originally developed for the typewriter but now is the standard layout for the computer. There are four main parts to a keyboard and they are the main keyboard, numeric keypad, cursor keys and function keys. An advantage Most computers have this device attached to it and a skilled typist can enter data very quickly. A disadvantage It can be very time consuming to enter data this way, especially if you have not had much practice at typing. It could also cause cramps in the fingers. The mouse is the most common pointing device. ...read more.


This kind of technology is done with the aid of computer hardware. Video digitiser come in colour and it also can capture moving video sequences as well as stil images. An advantage Allows us to capture real life images which are often more appropriate than drawing. A disadvantage A fast computer with a large memory capacity is required to cope with a large amount of data involved. A digital camera is used in the same way as an ordinary camera and it even looks like an ordinary camera but it has many different qualities. Digital cameras don't use film like the ordinary camera but they use loads if light sensors built inside it. Once a picture has been taken the light sensors is used to input the photo on a screen on the cameras back. This photo now can be stored in the cameras RAM or saved on to a floppy disc. It can even be transferred on to a computer. Using a graphics package the image can be transferred on to a computer for editing. This means you could change the background colour of the photo, replace one person's head with another person's head. Digital cameras relatively cheaply but these kind of cameras don't have good picture quality. ...read more.


often produces very large data files. MIDI means Musical Instrument Digital Interface. This device uses musical instruments like keyboards, guitars and drums. These instruments send and receive electronic messages. If for example a musical keyboard is connected to a computer using a MIDI, then the musical information like a pitch can be stored into a computer but like sound sensor microphones has to be converted into digital format. The stored data can be sent back to the musical instrument to reproduce the signal sent to the MIDI is also used to allow different musical instruments, for example an electronic piano and a synthesizer to communicate and work together. Companies that use MIDI are companies such as the music industry. It uses MIDI to input music directly into a computer so that they can edit the music and even develop the music. The music industry often uses MIDI to mix sounds with other sounds, which are input from a sound sensor microphone. This is called remixing. An advantage Once the tune has been played on the musical instrument, all the details are held on the computer, these details may then be changed. It is possible to speed up the tune, slow it down or even make it sound like a completely different instrument. A disadvantage A musician is required to play the instrument to acquire the input, so some musical knowledge is required. 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Hardware section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Hardware essays

  1. Peer reviewed

    Using a PC Correctly and Safely

    3 star(s)

    It is also possible to view an attachment without fully downloading it or you can use virus-checking software, such as McAfee or Norton, to scan the attachment before downloading. Both methods help to reduce the risk of getting a virus.

  2. Computer Hardware, uses, advantages and disadvantages.

    2: Higher sensitivity means that some people could find it hard to control. 3: They are easier to maintain so they do not require cleaning. 3: Many optical mouse have lights in them, which some people find annoying. Intel core duo processor �259.00 In a dual core processor each core handles incoming data strings simultaneously to improve efficiency.

  1. Choosing hardware and input devices.

    Each one for a different activity. Because it is not wireless, you can't use it from a longer distance compared to a wireless keyboard. Handheld Scanner �89.99 Pc World It uses a light source, normally a cold cathode lamp to brighten the scanned imaged.

  2. Choosing the best harware for my system.

    extra/unwanted lines or marking made and that no other program or tool was clicked besides the one that I wanted. I corrected the errors in my work by using the eraser to erase unwanted lines or markings and I closed the program that had opened accidentally and opened the one that I needed for my work.

  1. The keyboard is the most widely used input device and is used to enter ...

    Turning the ball with your hand moves the pointer on the screen. It has buttons like a standard mouse, but requires very little space to operate and is often used in conjunction with computer aided design. You will often find a small tracker ball built into laptop computers in place of the conventional mouse.

  2. Hardware Choices and Operating System.

    You can get other web browsers that are better, faster and safer. Paint Free (installed in your computer when purchased) Paint allows you to create pictures using tools that it provides. It is easy to use. It is not the best of programs for creating and editing pictures.

  1. ICT & Special Needs This essay focuses on the way that Mr Glassey uses ...

    He uses it for the text to Braille converter allowing him to read much which could not be read before. He uses this device because of the powerful KeyWeb internet browser which it comes supplied with it. What are his needs?

  2. Unit 14 Mobile communication technology

    When devices are connected using infrared it is called beaming, the beam is invisible to humans and requires a clear line of sight to work so it can?t go through objects like walls etc. infrared is used with devices like remote controls and garage doors but is also used to send information from computers to mobile phones.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work