Introduction

In the previous units you have been exposed to Input/output interfaces, control and techniques etc. This unit covers Input/output devices and technologies related to them. The basic aspects covered include:

1. The characteristics of the Device
2. How does it function?
3. How does it relate with the Main computing unit?

Objectives

After going through this unit you will be able to:

• describe the characteristics, types, functioning and interfacing of Keyboards;
• describe the characteristics, technology and working of Mice;
• describe characteristics, technology and working of Video ~&ds including various parameters, Video Memory, interfaces and Graphic accelerators
• describe the characteristics, technology and working of Monitors;
• describe the characteristics, technology and working of Liquid cbstal Displays (LCDs), and Video Cameras;
• describe the characteristics, technology and working of Sound Cards;
• describe the characteristics, technology and working of Printers; 
• describe the characteristics, technology and working of Modems;
• describe the characteristics, technology and working of Scanners; and 
• describe the the purpose of Power Supply and explain SMPS