Computer Skills is my personal career and skills

skills

1. Computer Skills Chapter 1: Introduction to computer 1

2. Computer A Computer is an electronic device, operating under the control of instruction stored in it’s own memory that can accept data (input) process the data according to the specified rules, produce information (output),and store the information for future use. 2

3. Functionalities of a computer Any digital computer carries out five functions in gross terms : Takes data as input. Stores the data/instruction in it’s memory and use them when required Processes the data and converts it into useful information. Generates the output Controls all the above four steps 2

4. 4 Functionalities of a computer ( Contd ) Data Processing Information 4

5. Computer Components 5 Hardware Software 5

6. 6 Hardware Computer hardware is the collection of physical elements “Tangible objects”. That constitutes a computer system. The actual machinery, wire, transistors and circuits.

7. 7 Hardware

8. Software 8 Computer Programs Instruction and data

9. 9 Computer Units 1 . Input Unit 2 . Central processing Unit 3 . Primary Memory Unit 4. Secondary storage Unit 5. Output Unit

10. 10 Input Devices Input device is any peripheral (piece of computer hardware equipment to provide data and control signals to an information processing system such as a computer or other information appliance. Input device Translate data from form that human understand to one that computer can work with. Most common are keyboard .

11. 11 Computer Units

12. 12 Input Devices Examples of manual Input Devices Keyboard Joystick Touch screen Scanner mouse Remote Graphic tablet Light pens Webcams Digital camera Microphone Numeric keypad

13. 13 Examples of Input Devices Keyboard Mouse (pointing devices) Microphone Touchscreen Scanner Webcam Touchpads MIDI keyboard Graphic Tablets Cameras Pen Input Video Capture Hardware Microphone Trackballs Barcode reader Digital Cameras Joystick Gamepad Electronic whiteboard Note : The most common use keyboard is the QWERTY keyboard. Generally standard Keyboard has 104 keys .

14. 14 Central Processing Unit CPU Known as microprocessor or processor It is responsible for all functions and processes