Topic 4- Peripherals

COMPUTER PARTS & COMPONENTS

PERIPHERALS

What is peripherals ??

he students should be able to:

state the definition of peripheral identify different types of peripherals state examples different types of peripherals explain the functions of each peripheral

1: Definition of Peripheral 2: Different Types and Functions of Periph

Definition & types of peripheral Peripheral Device : External hardware devices attached to the computer are called peripheral devices There are three types of peripheral devices : • Input devices • Output devices • Storage devices

Input Devices Input devices are any electronic device that are connected to a computer and produces input signals.

Input Device

Output Devices Output is the result of data processing activity when it is presented externally to the system. The output from a computer can be printed or displayed form . An output device is hardware that is capable of delivering or showing information to one or more users. An output device shows, prints and presents the results of a computer’s work.

Output Device

Storage Devices Information and documents are stored in a computer storage so that it can be retrieved whenever they are needed later on. Computer storage is the holding of data in an electromagnetic form for access by a computer processor.

Activity 2: Different types and the functions of peripheral

1. Printers A printer is another example of an output device that can be used to print text and graphics on mediums such as paper, transparency film or even cloths.

Scanners In computing, a scanner is a device that analyzes images, printed text, handwriting, or objects (such as an ornament) and converts it into a digital image

These are examples of scanners: a. The flatbed scanner is the most common in offices. b. Hand-held scanners are no longer used due to the difficulty in obtaining a highquality image. c. Digital camera scanners, that are based on the concept of reprographic cameras. d. Planetary scanners, which take photographs of books and documents e. 3D scanners, for producing three-dimensional models of objects,

Hand-held scanners

LCD Projector LCD projector is a type of video projector for displaying video, images or computer data on a screen or other flat surface. It is a modern equivalent of the slide projector or overhead projector.

Digital Cameras Digital Cameras are electronic devices used to capture and store photographs digitally, using the memory card without using photographic film like conventional cameras, or recording images in an analog format to magnetic tape like many video cameras.