About Computer Basics - 1

Introduction to computers

A computer is an electronic device that can store and process raw data to give desired outputs. In computer, processor is called as the brain of the computer. Mac is an expensive and a powerful home desktop computer. The G3 chip is used in this iMac.

People or one who operates computer is called a user. It is said that some computer systems are complete without a person's involvement, but no computer system is fully autonomous. Computer can perform it's job without a person sitting in front of it. But people still design, build, program and repair computer systems.

The physical components that make up a computer system like keyboard, mouse, monitor, circuit board are called - Hardware

Data consists of individual facts or pieces of information that by themselves may not make much sense to person. A computer'system primary job is to process these tiny pieces of data in various ways converting them into useful information.

If we compare the book with the computer, then the words written on the pages are equivalent to the software of the computer. Without the words, the book is useless in  the same way as without software the computer will be of little use. Software is nothing but the programs that control the computer system. Software is a set of instructions that makes the computer perform tasks. In other words, software tells the computer what to do. The term program refers to any piece of software.

The information processing cycle consists of four parts:

1. Input 

2. Processing 

3. Output 

4. Storage 

There are two types of software:

(i)  SYSTEM SOFTWARE 

(ii) APPLICATION SOFTWARE 

• The first type of software that mention above line is very helpful to the computer in  a way helps to perform different tasks and manage its own resources. Programs allow the hardware to run properly are known as SYSTEM SOFTWARE.
• Operating is an example of system software. 
• The second one is Application software is about to perform tasks such as creating documents. Programs that allow the user to do specific tasks are called APPLICATION SOFTWARE.
• Spreadsheet is an example of Applications software.

Computer Awareness - 2

Which area of a computer that temporarily holds that is waiting to be processed, stored, or output.

- Mercury

Which tool to browse all disks connected to the computer?

- Windows Explorer

Deleted filescenes can be recalled from Recycle Bin in Windows by

- Restore

Central Processing Unit consists:

- Control Unit, Airthmetic Logic Unit, Memory Unit.

When sending an email, which line describes the contents of the message.

- subject

The 3rd Generation Computer was made with

- IC

The resolution of the screen is indicated by 

- pixels

Not a computer language?

- Medium level language

Which package is best suited for preparing Presentation?

- Power point

When a network is confined to a single location, it is called?

- Local Area Network

Which programs are used to create numeric based documents such as budgets or balance sheets.

- Spread sheet

What type of chips are specifically designed to handle the processing requirements related to displaying and manipulating 3-D images.

- Graphics coprocessors

Creating a duplicate set of programs or date files for safekeeping?

- Backing up

For web navigation following software is/are used:

- All of these

Non-impact printer

- Ink Jet Printers 

Which devices are connected in motherboard through,

- ports

Loading Operating System onto RAM is called,

- Booting

Computer Awareness - 3

Questions and Answers

01. Which of the following is true about operating system?

1. It is an interface between user and computer
2. It manages all resources 
3. Both 1 and 2
4. All of the above 

02.  A set of instructions telling the computer what to do is called?

1. Mentor
2. Instructor
3. Compiler
4. Program

03.  BIOS is responsible for

1. Handling the particulars of   input/output operations
2. Output operations 
3. Input operations 
4. All of the above

04.  Cache memory is

1. Bigger and slower than main storage 
2. Smaller and faster than main storage
3. Smaller but slower the main memory 
4. None of the above 

05.  In MS-Excel, if you see a small red triangle in in the top right corner of a cell, it means there is something        attached to the cell. What is it?

1. A comment
2. An attachment 
3. An error 
4. All of the above

06.  What does the XP stand for in Windows XP?

1. Exponential 
2. Experience 
3. Exchange 
4. Enlarged

07.  Which one of the following languages is the system programming language derived from pascal and                intended for the defence application?

1. C-language 
2. C++ language
3. FORTRAN
4. Ada

08.  Which one of the following memories is not the primary memory of a computer?

1. ROM
2. RAM
3. EEPROM 
4. CD-ROM

09.  Which one of the following peripherals cannot serve as both input and output devices?
      (a) Tele-printer
      (b) Floppy disk drives
     (c) Scanner
     (d) Optical disk drives

10. Data stores in computers in which forms - Bits
11. The result of a formula in a cell is - displayed value
12. The ALU performs Logic operations
13. Word processing, spread sheet and photo editing are example of - Application software
14. A computer or Network is protected by - firewall
15. FTP stands for - File Transfer Protocol (Multiple computers connected by - HUB)
16. PACE is a super computer developed by - DRDO
17. Network interface card is used to connect computers to a nework
18. A word processor is used to - Creating documents
19. A program used to perform tasks on a computer is called - software
20. Slowest Internet connection service is - Dial-up Service

Computer Basics

Computers

Nowadays computers are become an inseparable part of our lives, in our daily life we are depending on computers, so must have knowledge of this. And, computer awareness is essential for various competitive examinations such as BANK (clerk & PO) exams, LIC, SSC and RAILWAY etc.