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Input unit: These are used to read data and transfer to primary memory contained in CPU through keyboard or floppy disk or mouse etc.Central Processing Unit (CPU): This consists of three divisions. They are:
1) Primary memory unit: This memory unit allows computer to store the data orinstruction read by input devices or data obtained by calculations in the program.
2) Control unit: This controls unit directs the operations of all units. This unit decodes and executes the instructions given in the program.
3) Arithmetic logic unit: This performs basic arithmetic operations like adding, subtracting, multiplicating, dividing and uses trigonometrical functions. It can also perform logical operations like comparing two variables, justifying the conditions. It can take many logical decisions.Secondary memory or storage unit: These are external storage units and store data or program permanently on magnetic disk and magnetic tape.
Output unit: Output unit is used to take data from primary memory and writes it on output devices like video display unit or printer etc. All these physical units and various other equipments in which the computer is made of is called ‘hardware'. The sequence of instructions given to a computer to solve any problem is called ‘software'.
Batch Processing When the entire computer system is dedicated to a single job, the system is said to be operating in Batch Processing mode. In this mode each program is run to
DESIGNING COMPUTER BASED INFORMATION SYSTEMS Background The role of Management Information Systems (MIS) in an organization can be considered as providing
Write a C++ program that declares three integers and three strings. The program prompts the user for three characters and three integers and prints them all on one line.
what is CAI? explain its pit falls.
sum of first 100 integers
To make a program in assembler two choices exist, the earliest one is to use the TASM or Turbo Assembler, of Borland, and the next one is to use the debugger, generally we use this
n-ary relationships in database design Each n-ary where n>2 relationship type is maped into a table name of the relationship works as the name of the table. The primary key of suc
Function: The purpose of a function is to take in a number of values or arguments, do some calculations with those arguments and then return a single result. Each language has d
Analog Transmission: In analog transmission, there is a continuous up and down pattern. For example, one wave constitutes one cycle, which is measured in the unit called Hertz
Question 1 Classify and explain the different types of computers Question 2 List and explain the commonly used input devices Question 3 What is binary number system? Exp
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