TLE 4

• What is the physical components of a computer system? Hardware
• Components that read or accepts data input device
• 4 types of mouse Wireless, Optical,Laser, Mechanical
• It Conrols the computer, used to navigate mouse
• What type of mouse has a rubber ball? Mechanical mouse
• What is most widely used mouse?

  Optical Mouse
• This mouse has a laser and widely used in gaming

  Laser Mouse
• It connects with Bluetooth

  Wireless mouse
• This is used to enter text

  Keyboard
• This keyboard is often use for work

  Ergonomic keyboard
• Has an additional keys specific for multimedia purpose

  Multimedia Keyboard
• Includes key to launch application email and web

  Internet Keyboard
• Keyboard that uses battery and radio frequency such as infrared or bluetooth

  Wireless Keyboard
• Especially used by gaming enthusiasts may have an extra set of keys

  Gaming Keyboard
• It reads text, images and converts them into digital files for storage

  Optical scanner
• Composed of flat sensitive pad and stylus.Used to create digital artwork.

  Graphics Tablet
• Used to capture images and stores them in the computer

  Camera/Webcam
• To record sounds to a computer

  Microphone
• It retrieves,stores and processes data

  Processing Device
• What is CPU?

  Central Processing Unit
• What is CPU to a computer?

  The brain of the computer
• Holds and processes temporary data which are erased when the computer is turned off

  Memory
• The heart of a computer

  Motherboard
• Retrieves and display data or information that is sent through input devices

  Output Device
• Display images processed by the computer

  Monitor
• What are the 3 types of a monitor

  CRT

  LCD

  LED
• What is CRT?

  Cathode Ray Tube
• What is LCD?

  Liquid Crystal Display
• What is LED?

  Light Emitting Diode
• This type of monitor is the oldest type.It is bulky and heavy.

  CRT
• This monitor is the most common and widely used.It is flat and thinner compared to CRT. 

  LCD
• This monitor creates a brighter display and it can be used outdoor.

  LED
• Used to print text, picturesand other visual materials

  Printer
• What are the 3 types of printer?

  Inkjet

  Dot-matrix

  Laser
• This printer is mostly used in receipt

  Dot-matrix
• Most widely used printer

  Inkjet
• The most expensive printer

  Laser
• Converts electromagnetic waves into audible sound waves

  Speaker
• What are the 6 kinds of a input device?

  Mouse Webcam

  Keyboard Optical Scanner

  Microphone Graphics Tablet
• What are the 4 type of Output Device?

  Printer Speaker

  Monitor Digital Projector