Jasmeet Chap 01 Intro To ComputersPresentation Transcript
CHAPTER 1 INTRODUCTION TO COMPUTERS By : Jasmeet Khosa
What is a computer ? How is computer defined ?
Electronic device operating under the control of instructions stored in its own memory
Accepts Data Processes Data into Information Produces and stores results
What is a computer ? What is the information processing cycle ?
The components of a computer ? What is an input device ?
Hardware used to enter data and instructions.
What is and output device ?
Hardware that conveys information to one or more people.
What is a system Unit ?
Case containing electronic components used to process data.
The components of a computer ? What are the two main components on the motherboard ? Central Processing Unit (CPU) * Also called as processor. Memory
The components of a computer ? What is storage?
Holds Data, instructions and information for future use.
The two components of storage are:
Storage Media Storage Device
The components of a computer ? Examples of storage media are: Portable, thin memory cards USB flash drive Floppy Disk Compact Disk (CD) Hard Disk
The components of a computer ? What is a communications device ? Hardware components that enables a computer to send and receive Data, instructions, and information. Occurs over cables, telephone lines, cellular radio network, Satellites, and others transmission media.
ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS ? What is the advantages of using computers ? Reliability Speed Communications Consistency Storage
ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS ? What is the disadvantages of using computers ? Violation of privacy Impact on Labor Force Health Risks Impact on Environment
Network and the internet ? What is a network ?
Collection of computers and devices connected together.
Communications Device Transmission Media Enable a connection between computers Cables Satellites Telephone lines Cellular radio One type is a modem
Network and the internet ? To save time and money What are the reasons to internet ? To share Resources Information Hardware devices Data Software programs
Network and the internet ? Why do users access the internet ? Communication Information Shopping Banking and investing Classes Entertainment
COMPUTER SOFTWARE? What is a software ? Consists of a series of instructions that tells the computer what to do Also called a program
COMPUTER SOFTWARE? What is system software ?
Programs that control or maintain the operations of the computer and its devices.
What is application software ?
Programs that performs that perform specific tasks for users.
What is a programmers ?
Someone who develops applications or system software.
Categories of computers ? What are the categories of computers ?
Mobile computers and mobile devices
Categories of computers ? What are the categories of computers ? Under microcomputers there are : Desktop Laptop Tablet Pc Palm PC PDA Net book
SERVERS? What types of servers are there ?
Powerful, large computer that supports up to a few thousand computer.
Very powerful, expensive computer that supports thousands of computers.
-The faster, most powerful, most expensive computer. Used for application requiring complex mathematical calculations.
Elements of an information system ? What are the information system elements ? Data Hardware Software Procedures People
Computer applications in society ?
Question ? 1) Give me few example of who needs and uses a power computer?
Question ? 2) What are the few functions of a PDA ?