Q1. What is computer Explain basic computer architecture and Difference components.
2. Discuss the use of memory in computer system, Explain memory hierarchy in details.
3. What is software? Explain difference types of software with explain.
4. Write short notes on the given:-
(I) Internet.
(II) LAN (Local area network )
(III) Search engine
(IV) Web browser
Q 1.What is computer Explain basic computer architecture, Difference components of computer.
Computer:- Computer is defined as an electronic device that takes input data and instructions from the user and after processing them, it generates useful and desired output quickly.
A computer is designed to execute applications and provides a variety of solutions through integrated hardware and software components.
It is fast and automatic device. It works with the help of programs and represents the decimal numbers through a string of binary digits. It also has a memory that stores the data, programs, and result of processing. It is believed that the Analytical Engine was the first computer which was invented by Charles Babbage.
Components of computer system:-
Computer hardware :- These are physical parts/ intangible parts of a computer. eg Input devices, output devices, central processing unit and storage devices.
Computer software :- CS also known as programs or applications. They are classified into two classes namely - system software and application software.
Discuss in details of components of computer system
1. Input: It accepts data and instruction through the input devices such as keyboard, mouse, scanner, etc., from the user to process it.
2. CPU:- It may be considered as the brain of any computer system. It is just like brain that takes all major decisions, makes all sorts of calculations and directs different parts of the computer functions by activating and controlling the operations.
The CPU is a complex IC chip having millions of transistors. As mentioned earlier, a CPU has three major identifiable parts: Control Unit (CU), Arithmetic & logic Unit (ALU) and a set of Registers.
3. Storage : It stores the data and the instructions for future execution.
4. Output: It generates the desired output after executing the instructions and processing the input data.
5. Registers (MU):- It is small, fast and temporary memory built inside computer where data and instructions are stored at the time of execution. CPU has a set of Registers which is used to store some data temporarily. Register lies above Cache and Main memory in memory hierarchy of the system.
2. Discuss the use of memory in computer system, Explain memory hierarchy in details.
Memory:- Memory is the storage area of the computer to place instructions and data it called memory. it is categorized into primary (main memory) and the secondary memory(Permanent memory).
Memory Hierarchy:- The computer requires different kinds of memory for its proper functioning. Since the fast memories are very expensive, they cannot be used in excess. There is hierarchy of memories considering their speed and cost. The registers are the fastest storage devices; even faster than the cache memory (SRAM), which is faster than the main memory. The primary or memory the secondary memory. The hierarchy of various types of memory is shown in Figure:-
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| (Figure hierarchy). |
The memory can be two categories according two the hierarchy:
3. What is software? Explain difference types of software with explain.
A computer system consists of two parts – hardware and software.
These are all software components using computer system .
4. Write short notes on the given.
I) Internet.
II) LAN (Local area network )
III) Search engine
IV) Web browser
1. Internet:- The Internet is a global wide area network that connects computer systems across the world. It includes several high-bandwidth data lines that comprise the Internet "backbone." These lines are connected to major Internet hubs that distribute data to other locations, such as web servers and ISPs.
You must have access to an Internet service provider (ISP), which acts the middleman between you and the Internet. Most ISPs offer broadband Internet access via a cable, DSL, or fiber connection.
Examples of internet:- Email, Web Page and Browser, Social media, Online gaming etc.
2. LAN (Local area network ):- Local Area Network is a private owned computers network connected to each other in a small area such as room ,building and office it called LAN.
LAN is used for connecting two or more personal computers through a communication medium such as twisted pair, coaxial cable, It is less costly as hubs, network adapters, and ethernet cables.
3. Search engine:- Search engines is a tool allowing the user to type a key word in the browser interface, and search for the related information it is called search engine.
Some of the popular search engines are Google, Alta Vista, Lycos. The Google search engine allows search in regional languages such as Hindi, Tamil, Marathi etc.
4.Web Browser :- Web browser is a computer program that enables the user to access the web pages, retrieve, display and send required information across the Internet it called web browser. It is useful because it acts as an interface between the user and the server by taking requests from the user and sending them to the server. There are two types of web browsers, text browsers and graphical browser
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