Assignment (2)


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Assignment (2)

  1. 1. Assignment#1 Submitted to: Engr. Chaudhary Yasir Submitted by: Asma Dildar Course code: (CPE-111) Subject: Computer fundamental Computer engineering UCE&T ,BZU MULTAN
  2. 2. Types of computer Computers can be classified based on their principles of operation or on their configuration .By configuration,we mean the size ,speed of doing computation and storage capacity of a computer. Types of computer based on principles of operation There are three different types of computer according to the principles of operation.those three types of computers are: Analog computers (ii) Digital computers general purpose computer special urpose computer (iii) Hybrid computer (i)  Analog computer An analog computer that uses the continuously changeable aspects of physical phenomenon Such as electrical,mechanical,or hydrolic to model the problem being solved.
  3. 3. Example: Norden bombsight Applications Analog computers were widely used in scientific and industrial applications . Analog computers can have a very wide range of complexity. Slide rules and nomographs are the simplest, while naval gunfire control computers and large hybrid digital/analog computers were among the most complicated Advantages Systems for process control and protective relays used analog computation to perform control and protective functions.  Digital computer An electronic computer in which the input is discrete rather than continuous, consisting of combinations of numbers, letters, and other characters written in an appropriate programming language and represented internally in binary notation Compare analog computer
  4. 4. Examples (i)Palmtop computers (ii)Desk top computers (iii)Lap top computers (iv)Mainframe computers General pupose computer A general-purpose computer is one that, given the appropriate application and required time, should be able to perform most common computing tasks. Personal computers, including desktops, notebooks, smartphones and tablets, are all examples of general-purpose computers. The term is used to differentiate general-purpose computers from other types, in particular the specialized embedded computers used inintelligent systems. Special purpose computer a Special-Purpose Computer are designed to be task specific and most of the times their job is to solve one particular problem.
  5. 5. They are also known as dedicated computers, because they are dedicated to perfom a single task over and over again. Such a computer system would be useful in playing graphic intensive Video Games, traffic lights control system, navigational system in an aircraft, weather forecasting, satellite launch / tracking, oil exploration, and in automotive industries, keeping time in a digital watch, or Robot helicopter.  Hybrid computer A hybrid computer is a type of computer that is designed to provide the features and functions that are found by both the digital and the analog computers. A hybrid computer system offers a much cost effective method that is used to perform complex simulations. Examples: One example of a place you may find a hybrid computer is in the medical field or centers. This helps lessen the overall time needed for data processing. Another example of computer people are calling hybrid is a laptop mixed with a tablet. This means that a person can use a laptop, but if they need to take it someplace, they have the ability to remove it from the keyboard and use it as a tablet.
  6. 6. Types of computer based on configuration There are four different types of computer when we classify them based on their performance and capacity.the four types are: (i) (ii) (iii) (iv) Super computers Mainframe computers Mini computers Micro computers (i) Super computers The fastest type of computer. Supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations. For example, weather forecasting requires a supercomputer.
  7. 7. Other uses of supercomputers include animated graphics, fluid dynamic calculations, nuclear energy research, and petroleum exploration. Example: IBM's Roadrunners is the fastest supercomputer in the world, twice as fast as Blue gene and six times as fast as any of the other current supercomputer. (ii) Mainframe computer Mainframe computers are used in banking, finance, health care, insurance, utilities, government and other public and private enterprises. They are large, powerful computers designed to handle great volumes of complex data and process bulk information. This makes them ideal for the business and national security environment. in the hierarchy that starts with a simple microprocessor(in watches, for example) at the bottom and moves to super computers at the top, mainframes are just below supercomputers. Example: IBM system Z9 mainframe
  8. 8. (iii) Mini computer A minicomputer is a type of computer that possesses most of the features and capabilities of a large computer but is smaller in physical size. A midsized computer. In size and power, minicomputers lie between workstation and mainframes. In the past decade, the distinction between large minicomputers and small mainframes has blurred, however, as has the distinction between small minicomputers and workstations
  9. 9. (iv) Micro computer A microcomputer is a small, relatively inexpensive computer with a microprocessor as its central processing unit (CPU).[] It includes a microprocessor, memory, and input/output (I/O) facilities. The term microcomputer is generally synonymous with personal computer (PC), or a computer that depends on a microprocessor. Microcomputers are designed to be used by individuals, whether in the form of PCs, workstations or notebook computers. A microcomputer contains a central processing unit (CPU) on a microchip (the microprocessor), a memory system (typically read-only memory and random acces emory), a bus system and I/O ports, typically housed in a motherboard. Refrences: (i) (ii) (iii)