Basic Technology of Information Technology

[pic 1]

  OUM BUSINESS SCHOOL

 MAY 2017

 CBCT 2203

BASIC CONCEPTS OF INFORMATION TECHNOLOGY

MATRICULATION NO        :         961114105680001

IDENTITY CARD NO.        :         961114105680

TELEPHONE NO.                :        0192633412

E-MAIL                  :         adibah.zahari@yahoo.com.my

LEARNING CENTRE        :         OPEN UNIVERSITY BANGI

CHAPTER 1 : INTRODUCTION

1.1 Introduction

According to David Prakel (2009), Steven Sasson as an engineer at Eastman Kodak invented and built the first electronic camera using a charge-coupled device image sensor in 1975.

Digital camera is the technology that is frequently being used by todays’ generation. So what exactly is a digital camera? According to Farlex Inc. (2013) digital camera or digicam is a camera that produces digital images that can be stored in a computer, displayed on a screen and printed. Most cameras sold today are digital, and digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles.

A digital camera may be considered both an input and output device. This is because digital camera can both take pictures (input) and send them to your computer (output).

When the button is pressed with a digital camera, an aperture opens at the front of the camera and light streams in through the lens. This part is very similar to the film camera. However, there is no film in digital camera. Instead, there is a piece of electronic equipment that captures the incoming light rays and turns them into electrical signals. The light detector is one of two types, either a charge-coupled device (CCD) or a CMOS image sensor, Chris Woodford (2017). Chris Woodford (2017), added that in a digital camera, light from the thing you are photographing zooms into camera lens. This incoming ‘picture’ hits the image sensor chip, which breaks it up to millions of pixels. The sensor measures the colour and brightness of each pixel and stores it as a number. Your digital photograph is effectively an enormously long string of numbers describing the exact details of each pixel it contains. This is how digital camera works.