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# Fundamentals.1

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### Fundamentals.1

1. 1. Fundamentals of Computers http://improvec.blogspot.in/ 1
2. 2. ObjectiveOn completion of this period, you would be able to learn Organization of a Digital Computer Components of a computer http://improvec.blogspot.in/ 2
3. 3. PrerequisitesWhat is a computer? Computer is an electronic data processing machine http://improvec.blogspot.in/ 3
4. 4. Computer ? (Cont..) An electronic device which accepts input, processes it, and gives the result as output http://improvec.blogspot.in/ 4
5. 5. Operations of a Computer ?Accepts the input data Processes the dataProduces the information as output http://improvec.blogspot.in/ 5
6. 6. COMPUTER SYSTEM monitor monitorKeyboar Keyboardd mous mous ee http://improvec.blogspot.in/ 6
7. 7. A Complete Computer System consists of:Hardware - Physical components of a computer.Software - Set of programs.Data - Set of facts.User - A person who works on a computer. http://improvec.blogspot.in/ 7
8. 8. HARDWARE http://improvec.blogspot.in/ 8
9. 9. Software (C – Program): 1 /* Gioe.c 2 Class average program with 3 counter-controlled repetition */ 4 #include <stdio.h> 5 6 int main() 7 { 8 int counter, grade, total, average; 910 /* initialization phase */11 total = 0;12 counter = 1;1314 /* processing phase */15 while ( counter <= 10 ) {16 printf( "Enter grade: " );17 scanf( "%d", &grade );18 total = total + grade;19 counter = counter + 1;20 }2122 /* termination phase */23 average = total / 10;24 printf( "Class average is %dn", average );2526 return 0; /* http://improvec.blogspot.in/ successfully */ indicate program ended 927 }
10. 10. Components of computer system Input unit Memory unit ALU (Arithmetic & Logical Unit) Control unit Output unit http://improvec.blogspot.in/ 10
11. 11. Block diagram of a digital computer SECONDARY MEMORY SECONDARY MEMORY (BACKING STORAGE)) (BACKING STORAGEINPUT UNIT INPUT UNIT MEMORY UNIT MEMORY UNIT OUTPUT UNIT OUTPUT UNIT CONTROL UNIT CONTROL UNIT ALU ALU CPU CPU http://improvec.blogspot.in/ 11
12. 12. COMPONENTS (Cont..)INPUT UNIT Device, which accepts the program & data from userOUTPUT UNIT Device, which shows results in desired form. http://improvec.blogspot.in/ 12
13. 13.  MEMORY UNIT Stores programs, data (input, output) and intermediate results temporarily. CPU (Central Processing Unit) ALU (ARITHMETIC & LOGICAL UNIT) CU (CONTROL UNIT) http://improvec.blogspot.in/ 13
14. 14. CPU (Central Processing Unit) CPU is the heart and brain of the computer. Combination of ALU & CU. http://improvec.blogspot.in/ 14
15. 15. ALU (Arithmetic Logic Unit)It performs two types of operations Arithmetic Operations Logical Operations http://improvec.blogspot.in/ 15
16. 16. Control Unit Responsible for coordination and cooperation of various parts of a computer system Provides timing & control signals http://improvec.blogspot.in/ 16
17. 17. SummaryWhat is a computer?Organization of a computerComponents of a computer http://improvec.blogspot.in/ 17
18. 18. Questions1. What is a Computer?2. Explain the block diagram of a digital Computer with a neat diagram?3. List the different components of a computer & explain? http://improvec.blogspot.in/ 18
19. 19. Quiz1. A Computer is called as ?a) Electronic Machineb) Mechanical Machinec) Electromechanical Machined) Electrical MachineAnswer: a http://improvec.blogspot.in/ 19
20. 20. Quiz (Contd..)2. Brain of computer. a. Input Unit b. Control Unit c. CPU d. Output UnitAnswer: c http://improvec.blogspot.in/ 20
21. 21. 3. The meaningful form of data is called a. instruction b. data c. information d. all the aboveAnswer: c http://improvec.blogspot.in/ 21
22. 22. AssignmentWith the help of your lecturer, try to identitydifferent parts of a computer system and try tounderstand the working of the system http://improvec.blogspot.in/ 22