Types of Computers

Types of Computers

On the Basis of work: - 

A. Analog Computer
B. Digital Computer
C. Hybrid computer

A.          Analog Computer

Analog Computer measure temperature, voltage, current and pressure.
1. Accuracy low.
2. Storage capacity low.
3. Analog computer cannot re program or if we need to be re programmed the where circuit and hardware part to be required with news to ones.
4. Low cost.

Analog Signal

B. Digital Computer

1. Digital comput er work with binary digits.
2. Accuracy high then analog.
3. Storage capacity high then analog.
4. These computers are totally fixable and can be reprogrammed.
5. Digital computer converts the data in two digits. 

Fig No 3:- Digital Signal 

C. Hybrid Computer

1. Combination of analog and digital called hybrid.
2. It can perform the function of both analog and digital.
3. In hybrid computer have analog signals to digital and digital to analog convertor. Hybrid computers are used in hospital, Jet planes, Industry etc. 

On The Basic Of Size.

Super Computer:- 

Super computer are very powerful, multiprocessor or most expensive computers. These types of computers are used in supermarket, shopping mall etc. 

1. More processers are connected in super computer.
2. Expensive and powerful then other computer.
3. Processing speed high.
4. Storage capacity high.

Mainframe computer:-

They are medium or large machine made of several units connected together. Mainframe computers are generally used in big organization and government department for large scale of data processing. It can calculate millions of bytes per second. E.g. IBM1401.

1. Processing speed low then super computer.
2. More people communicate at a same time.
3. Used to engineering, scientific research etc.

Mini Computer:-

They are like a small mainframe computers. They consist of few separate unit connected together, they can maintained and operated by people who are not computer expert. They can process information at they are four million bytes per second. They are not so powerful and generally they are used in small organization, government department etc. E.g. Prime9755.

1. The third generation called minicomputer.
2. Small then super and mainframe but large then micro computer.
3. Less powerful then super and mainframe but more powerful then micro.
4. Used to data processing, programming. 

Micro Computers:-

They are the smallest general purpose computers. They are some size of type-writer; they contain a small CPU which is known as microprocessor. These computers are also known as personal computers and they are used by single person at a time.

1. Using single micro processor.
2. Manufactured with 16bit or 32bit micro processor.
3. Micro computer also called Personal computer.
4. Used in many fields in business, Education, Desktop designing, programming.

Based on Brand

Computers are classified in terms of brands also. Many companies are involved in manufacturing of computers throughout the world. On the basic of brand computers are divided in to three types.
1. IMP PC
2. IMP compatible
3. Apple/Macintosh
1. IBM PC: - It stands for international Business Machine Personal Computer. It is one of the leading companies in the world which was established in 1924 in USA. The computer manufacturing by IBM Company is called IBM computers and the micro computers manufactories by IVM computers called IBM PC.

1. Manufactured by IBM Company.
2. IBM Company called IBM computer.
3. IBM is one of the leading companies in computer manufacturing.
4. Quite expensive than other computer. 

2. IMB compatible: - A computer that has the same functional characteristics and principle of IBM computer. They are called IVM compatible. All the software and program which run in IBM compatible. These computers are cheaper and most popular because there parts are easily available in the market.

1. IBM companies clone are called IBM compatible.
2. Less powerful then original IBM.

3. Apple and Macintosh:- The computer manufactured by apple company with different architecture is called Apple Computers. It was established in 1970 in USA. The Apple computers uses their own hardware and own software. These computers are some way different from IBM computer because the software used in apple computer does not run in IBM computer. The advanced version of apple computer is known as Macintosh.

1. Manufactured by Apple Company.
2.  Used for desktop designing.
3. They are original and quite expensive then IBM and IBM compatible

On the Basic Of Model:-

1. XT
2. AT
3. PS/2


1. XT : - (Extra/Extended Technology)

Those computers which have 8086, 8088 microprocessor they are called XT computers. They had processing speed is 4.77 Mhz. and they cannot run advanced version of software.

2. AT: - It stands for Advanced Technology computers and those computers which have 80286, 80386, 80486, 80586 microprocessor, they are known as AT computers. They have large capacity of memory so they can run advanced version of software and mostly they are used to perform mathematical operation.

3. PS/2: - It stands for Personal Computer; IBM company started manufacturing next model of computer in 1990, which is small in size and they portable because they can run any types of software, because there speed is more than other computers.

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Characteristics of Computer

Characteristics of Computer

Speed:- Computer can do even perform exceptionally complex computation that individual … .. not have the capacity to do. The velocity of the PC is measured in mili second, smaller scale second, Pico second and nano second. 

Capacity:- Computer framework can store an extraordinary measure of data in it. PCs have inbuilt and assistant memory. Any information or data put away in its memory can be recover at whatever time later on as per necessities of the client. The limit of memory measured in KB, MB, GB, TB and so forth. 

Exactness:- If the given direction is 100% precise the PC give the exact result, if the given guideline is not 100% precise than the PC can't give 100% precise result which is known as the precision of PC. 

Adaptability:- The PC is a flexible machine. PC can impart to other framework and receive a few mod, similar to sound, video, representation. The computers are exceptionally adaptable in its operation. It has an extensive variety of utilization. It implies they are utilized as a part of various region like training, therapeutic, showcasing, promotion business. 

Amortization:- Once we give the proper information and direction a PC can do the operation naturally as it is now modified to do as such. 

Determination:- A PC is fit for doing the required undertaking over and over without influencing its pace and exactness and also proficiency. 

Electronic: - Computer is an electronic machine. All the equipment segments are absolutely reliant on power, without power PC can't boot. 

Preferences of Computer 

1. Performance given by the PC is 100% precise and it is dependable the other machine and person. 

2. Comparing with person it is much quicker. 

3. Computer can be exceptionally valuable in doing rehashed jos which man can not to do. 

4. Computer is adaptable machine so it can do numerous sorts of occupation once at once. 

5. Computer can use in different field like, training, exploration, science and innovation. 

Detriments of Computer 

1. Computer is costly and is past the span of destitute individuals. 

2. Computer is electronic machine, so all the taking care of is much. 

3. Danger electric stun and other physical harms. 

4. Computer expansion relies on upon machine. Notwithstanding for exceptionally basic figuring individuals need them. 

5. Although it helps in speedier and less expensive correspondence, there is much risk of security spillage by outsider by which validation gets to be inquiries. 

All 

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Definition of Computer

Definition of Computer

PC is an advanced programmable electronic machine which recognizes data from the customer and assume that data as showed by predefined heading and give the ached for result. "PC" is gotten from the Latin word "Computer" which means to determine.

Vital Terms used as a piece of Computer

1.   Input: data is the data and heading which is nourishment to the PC.

2.  Input Devices: Input contraptions are those devices which are used to give data and course to the PC. For example: Mouse, console, Scanner et cetera.

3. Output: Output is a result, which is taken from rule memory (RAM).

4. Output Devices: Output contraptions are those devices which are used to show the result. For example: Monitor, Printer, Speaker et cetera.

5. Software: Software is an aggregation of framework furthermore set of information, which are plan and made by programming engineer by using programming vernacular to perform of specific undertaking furthermore wide task. For example: Ms. Office group, PageMaker, Tally, Corel Draw et cetera.

6.   Hardware: Hardware is the physical parts of PC which can be touched and seen. Case in point: Microprocessor, CPU fan, Monitor, RAM et cetera.

7.    Data: Data is a get-together of unrefined materials.

8.   Information: Information is a get-together of data and also took care of data which is significance full.

9.   Program: Program is a course of action of bearing which are use to play out some specific errand.

10.  CPU: It stays for Central Processing Unit. It is a hart and also cerebrum of the PC. It has three crucial parts. They are:

A.  ALU: it stays for Arithmetical and Logical unit which is responsible for playing out all key numerical and intelligible operations like, extension, subtraction, division and duplications.

B.   CU: it stays for Central Unit which is responsible for bringing the rule from rule memory (RAM).

C.   MU: It stays for Memory Unit it is generally called Resister Array which is responsible for securing widely appealing result between time since it is a temporary zone in the CPU.

11.  Microprocessor: It is a processor of CPU which is natural single chip. It is made by Silicon metal. For example: 80286, 80386, Dual Core, i3, i5 et cetera.

12.  Memory: Memory is a chip, contraption, space where we can store data and course.

13.  RAM:- It stands the Random Access Memory it is a key memory which is used to store data brief and it is in like manner used to fabricate the rate of PC and it is also knows as insecure memory since it loses its substance when power supply is off.

14. ROM:- it stays for Read Only Memory it is generally called non-eccentric memory since it doesn't loses its substance when power supply is off. It is for the most part used to store pre portrayed bearings used to execute working system known as firmware.

15.    Firmware:- Firmware are the predefined heading set away on RAM while creation of RAM, use execute working system.

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