1) There are two main types of computers: analog computers that process continuous data from analog signals, and digital computers that process discrete data from digital signals using counters. A hybrid computer combines both analog and digital components. 2) Computers can be specialized for specific tasks and inflexible, or general purpose and flexible to complete many different tasks. Super computers are very powerful machines used for tasks like NASA missions, while mainframe computers support networks of users through terminals. 3) Personal computers evolved from desktop PCs to include portable laptop and notebook computers. Operating systems progressed from single-tasking MS-DOS to the graphical multi-tasking Windows 95, 98, 2000, ME and XP systems that supported different

1. 4
3
Analog Computer)
Measuring Principle)
Continuous Data)
Analog Signal
Analog Computer
Digital Computer)
(Discrete Data)
Digital Signal
Counter)

2. Digital Computer
Analog Signal)
(Digital Signal)
Analog Signal
Converter)
Digital Signal Analog Signal
Hybrid Computer)
Analog Computer Digital Computer
Analog Computer

3. Digital Computer
Converter)
2.
2
Special
Purpose Computer)
Inflexible)
General
Purpose Computer)
Flexible)

4. 3.
4
Super Computer)
NASA)
Mainframe Computer)

5. Family)
Network)
(Terminal)
Multi Tasking)
Multi User)
ATM
Mini Computer)
Hard disk)

6. Micro Computer)
Personal Computer : PC)
2
1. Desktop
Computer)
2. Portable Computer)
Laptop
Computer Notebook Computer

7. Windows
MS-DOS
16
Single Task
(Text mode)
MS-DOS 6.22
MS-DOS

8. Windows 3.1 Windows 3.11
MS-DOS
Multitasking
3.1 3.11
Windows 3.11 for Workgroup
Windows 3.11
Windows 3.1 3.11
Windows 3.11 for Workgroup
Windows 95
32
Windows 3.1 Windows 95
Windows 95
(Client)
Windows NT Workstation
32
NT
CPU
Intel (386 , 486 Pentium)

9. Windows NT
Workstation
(Server)
Windows NT Advanced Server
NTAS Windows
NT
Windows 98/2000/ME/XP
Windows 98
Windows 98
Windows 98
Windows 98
NLS (National Language Support)

10. Windows 98 Language Pack
Windows 98
1
Windows 98
( -Layout)
Windows 98