3. •Evolution and Generation
•Basic Computer Organization
•Types of Computers
INTRODUCTION TO
COMPUTER SYSTEM
•Various Types of Software
•Programming Language Software’sSOFTWARE
INTRODUCTION TO
WINDOWS
•Microsoft Work
•Microsoft Excel
•Microsoft Power Point
•Microsoft Access
INTRODUCTION TO MS-
OFFICE PACKAGE
•Networking Basics, Topologies
•Software, Basics of Internet,
•E- mail, Risks and Protection of Networks.
NETWORKS
•Writing Logic for Program/ Pseudo Code (Flowcharting)
•Introduction to Programming Languages with examples in Visual Basic.
INTRODUCTION TO
PROGRAMMING
•SPSS/ Tally
INTRODUCTION TO ANALYSIS
/ ACCOUNTING SOFTWARE
12. DSIT 1001 Business Computing
• Differential Engine
– Charles Babbage – Father of Computers
– English Mathematician
– 1822
– First Computer
– Basic calc+ Log + Differential equation
– Steam Driven machine
– Single Stored program in Memory
– Memory + Central Processing Unit
– Punch Cards as memory
Steps……..Inventions
13. DSIT 1001 Business Computing
Steps……..Inventions
• Analytical Engine
– Charles Babbage
– 1833
– Fully functional
• differential engine
– Contains
• Input device as cards
• Control unit
• Output device
14. DSIT 1001 Business Computing
Steps…Inventions
• Hollerith Tabulator
– Herman Hollerith
– 1889
– U.S Census Bureau
– Official Purpose
– Punch cards
• store data
– Later IBM
• Mainframe+OS
• OS/2 -> OS with
windows
35. DSIT 1001 Business Computing
PC Components
Computer system - collection of electronic and
mechanical devices operating as a unit. The main
parts are:
1. System unit
2. Monitor
3. Keyboard
4. Mouse
5. Speakers
2
3 4
5
1
38. DSIT 1001 Business Computing
All of the electronic and mechanical equipment in a
computer is called the hardware. Examples include:
• Motherboard
• Hard disk
• RAM
• Power supply
• Processor
• Case
• Monitor
• Keyboard
• Mouse
Hardware
Input
Devices
Central
Processing
Unit
Output
Devices
39. DSIT 1001 Business Computing
Group Activity
• Maximum Number of Components
• Listing
– Input Devices
– Output Devices
– Storage Devices
– Processing Devices
– Network Devices
42. DSIT 1001 Business Computing
Input Devices
• Keyboard
• Point and draw devices
– Mouse, track ball, touch screen, light pen,joystick
• Scanning Devices
– OCR and OMR scanners,
• Electronic card based devices
– Bar code readers
• Speech Recognition Devices
• Vision Based Devices
43. DSIT 1001 Business Computing
Output Devices
• Two Types
– Hard Copy
– Soft Copy
• Monitor
• Printer
• Plotters
• Voice Responses
44. Data and Information
Data Information
•Data is the raw material that is to be
processed
•It is unorganized data or facts that
are to be processed.
•Data is useless unless it is processed
or has been made into something.
Data comes in figures, dates and
numbers and is not processed.
•Information is processed data.
•The data that can be made useful is
known as information.
•It cannot be generated without the
help of data.
•Information is processed and comes
in a meaningful form.
45. DSIT 1001 Business Computing
Central Processing Unit
The system unit is the main container for system
devices. It protects the delicate electronic and
mechanical devices from damage. Typical system
unit devices include:
• Motherboard
• CPU (Processor)
• Memory
• Disk drives
• Ports - USB etc.
• Power supply
• Expansion cards - sound card, network
card, graphics card etc.
46. DSIT 1001 Business Computing
Central Processing Unit
Computer program - a series of instructions. When a
program is run, the processor carries out these
instructions in an orderly fashion. Typical instructions
include:
• Arithmetic - addition, subtraction etc
• Logical - comparing data and acting according
to the result
• Move - move data from place to place within the
computer system - memory to the processor for
addition - memory to a printer or disk drive etc.
47. DSIT 1001 Business Computing
Mainboard or system board - the main circuit board
for the computer system. All device in the computer
system will either be part of the motherboard or
connected to it.
Motherboard
Processor
Socket
Memory
Sockets
Ports
PCI
Slots
Graphics Slot
Chipset
48. DSIT 1001 Business Computing
A computer power supply has a number of functions:
• Converts Alternating current (AC) Direct
current (DC)
• Transforms mains voltage (240 Volts) to the
voltages required by the computer. The main
voltages are:
Power Supply
49. DSIT 1001 Business Computing
Computer ports are interfaces between peripheral
devices and the computer. They are mainly found at
the back of the computer but are often also built into the
front of the computer chassis for easy access.
Ports at the rear of the computer
Ports at the front of the computer
Ports
50. DSIT 1001 Business Computing
Storage Device
• Computing hardware that is used for storing, porting and
extracting data files and objects
• It can hold and store information both temporarily and
permanently
• Can be internal or external to a computer