Top Ten Most Important Questions Answer About Computer and IT(SET-II)

Top Ten Most Important Questions Answer About Computer and IT(SET-II)

Q11: What is ALU( Arithmetic logic Unit)?

Ans: ALU is a part of CPU. Actual executing of instruction takes place in this part. All arithmetic and legal operation are performed in ALU. It consists of two units:

1.    Arithmetic Unit

2.    Logic Unit.

Q12: What is Arithmetic Unit?

Ans: It perform basic arithmetic function such as addition, subtraction, multiplication and division. ( +, -, x, /) etc.

Q13: What isLogic Unit?

Ans: It perform basic logical operations like comparing tow data items to find which data item I greater than, equal to or less than the other.

Q14: What isControlUnit?

Ans: It is an important component of CPU it acts like a supervisor of the computer it coordinates all activites of Computer System.

Q15: What is Memory?

Ans: Data and instruction are stored to in memory to be executed. This memory is temporary storage unit of data, instruction and information. It is also called primary memory.

Q16: What is bit?

Ans: Bit is the smallest unit of data in the form of 1 and 0.

Q17: What is byte?

Ans: Byte contains 8 bits. In modern digital computer the word size is usually a multiple of 8 bites such as 2 bytes or 4 bytes.

Q18: What is RAM (Random Access Memory)?

Ans: RAM is a temporary memory it is very important role is the processing speed of computer. After computer turn off all the data are erased form RAM.

Q19: What is ROM (Read Only Memory)?

Ans: ROM is a permanent memory its contain information about system and this information are load during manufacturing. User can store further data into RAM.

Q20: What is Access time?

Ans: This is measure of computer memory operating speed .It is the amount f time required to perform a read operation.

Top Ten Most Important Questions Answer About Computer and IT(SET-I)

Top Ten Most Important Questions Answer About Computer and IT(SET-I)

Q1: What is Information Technology (IT)?

Ans: Information Technology is technique used in the creation, storage,

Q2: What is data?

Ans:  A collection of raw facts and figures is called data. Data is collected from different sources and data may consist numbers, character, symbols or pictures.

Q3: What is information?

Ans: Processed data is called information. Information is the organized and processed form of data. It is meaningful than data and used for making decision.

Q4: What is data processing life cycle?

Ans: Data processing life cycle is a collection of steps required to convert data into information .The data processing life cycle are input, process, output and storage.

Q5: What are input devices?

Ans: Input devices are used to enter data or instruction into Computer.

Examples: Mouse,Keyboard, Scanner, Microphone,PC camera, Digital camera.

Q6: What are output devices?

Ans:Output devices are used to display information to the user.

Examples: Monitor,Printer,LCD,LED Speaker etc.

Q7: What is software?

Ans: A set of instruction that tells a computer what to do.

Examples: (Operating Systems, MS Office, Photoshop etc)

Q8: What is hardware?

Ans: The physical parts of a computer is called hardware. Hardwar can be seen and touched.Examples ( Mouse, System Unit, Monitor, ect.)

Q9: What is System Software?

Ans: System Software is program that run any hardware. System software solves system problems.Examples ( Unix, Linux, Windows etc)

Q10: What is application software?

Ans: Application software is used to perform specific task for the user, it also solve human problems. Examples ( Ms Word, Database, Spreadsheet etc).

short notes Keyboard,Mouse,Monitor,Microphone

Q: Write short notes on the following.

Keyboard

Keyboard is an input device used to enter data into computer .The button on keyboard is called keys. A keyboard contains over 100 keys. Thearrangement of keys on keyboard is called its layout. Itcontains (Numeric Keys, Function Keys, Alphanumeric Keys)etc.

Mouse

Mouse is a small lightweight input device. Mouse is moved on flat surface to control themovement of cursor (pointer) on a screen. A mouse usually has two or three buttons. These buttons are used to perform deferenttask.

Monitor

Monitor is the most common output device .It is also known as display or screen. The output displayed by monitor is called softcopy. A monitor looks like a television and it displays text and graphics.

Microphone

It is used to convert the spoken word into a digital signal for computer input. The microphone coverts audio signals to electrical waves ad these can be converted by electronic circuitry in the computer to digital form.