TYPES OF COMPUTER AND OPERATING SYSTEMS We have four different computer types classified according to their performance, power, and size. A computer is an electronic device that accepts data, processes it, stores, and then produces an output. There are different computer types available depending on the number of users they can support at any one time, their size, and power. Desktop computer A computer designed to fit comfortably on top of a desk, typically with the monitor sitting on top of the computer. Desktop model computers are broad and low, whereas tower model computers are narrow and tall. Because of their shape, desktop model computers are generally limited to three internal mass storage devices. Desktop models designed to be very small are sometimes referred to as slim line models. Laptop A small, portable computer -- small enough that it can sit on your lap. Nowadays, a computer laptop is more frequently called a notebook computer, though technically laptops are somewhat larger in size than notebooks in both thickness and weight Tablet A tablet is a type of notebook computer that has an LCD screen on which the user can write using finger and swipe actions or by using a special-purpose pen, or stylus.

1. Lesson 1
TYPES OF COMPUTER AND
OPERATING SYSTEMS

2. We have four different
computer types classified
according to their
performance, power, and size.

3. What is Computer?

4. A computer is an electronic
device that accepts data,
processes it, stores, and then
produces an output.

5. There are different
computer types available
depending on the number of
users they can support at any
one time, their size, and
power.

6. Can you identify this picture?
PC or Desktop Computer

7. Can you identify this picture?
Tablet

8. Can you identify this picture?
Tablet

9. What have you notice on the
three different computer you
saw earlier?

10. TYPES OF COMPUTER
Desktop computer
A computer designed to
fit comfortably on top of a
desk, typically with the
monitor sitting on top of the

11. Desktop model computers
are broad and low, whereas
tower model computers are
narrow and tall.

12. Because of their shape,
desktop model computers are
generally limited to three
internal mass
storage devices.

13. Desktop models designed to
be very small are sometimes
referred to
as slimline models.

15. Laptop
A small, portable computer --
small enough that it can sit on
your lap.

16. Nowadays, a computer laptop
is more frequently called a
notebook computer, though
technically laptops are
somewhat larger in size than
notebooks in both thickness

18. Tablet
A tablet is a type of
notebook computer that has
an LCD screen on which the
user can write using finger and
swipe actions or by using a

19. All user input is directly via
the LCD screen and not a
keyboard or mouse.

20. On a tablet computer,
handwriting is digitized and
can be converted to standard
text through handwriting
recognition, or it can remain
as handwritten text.

22. Tablet PCs can be equipped
with
a keyboard and/or a mouse for
input.

24. Smartphone
Smartphones are a handheld
device that integrates mobile
phone capabilities with the
more common features of a
handheld computer or PDA.

25. Smartphones allow users to
store information, e-mail,
install programs, along with
using a mobile phone in one
device.

27. 1.What are the different types
of Computer?
2.How they differ from one
and another?
3.Is there an advantage and
disadvantage from this types of

28. COMPUTER OPERATING
SYSTEMS

29. What is OS?
Give some example of OS:

30. An operating system (OS), in
its most general sense, is
software that allows a user to
run other applications on a
computing device.

31. The operating system manages
a computer's software
hardware resources, including:
• Input devices such as a
keyboard and mouse.

32. • Output devices such as
display monitors, printers and
scanners.
• Network devices such as
modems, routers and network
connections.

33. The OS also provides
services to facilitate the
efficient execution and
management of, and memory
allocations for, any additional
installed software application

34. If several programs are
running at the same time
(such as an Internet browser,
firewall, and antivirus),

35. the OS will allocate the
computer’s resources
(memory, CPU,
and storage) to make sure that
each one of them receives
what is needed to function.

36. Classification of Operating
systems
1. Multi-user: Allows two or
more users to run programs at
the same time. Some
operating systems permit

37. 2. Multiprocessing : Supports
running a program on more
than one CPU.
3. Multitasking : Allows more
than one program to run
concurrently.

38. 3. Multithreading : Allows
different parts of a single
program to run concurrently.
4. Real time: Responds to input
instantly. General-purpose
operating systems, such as DOS
and UNIX, are not real-time

39. The three most popular types
of operating systems for
personal and business
computing include
1. Linux,
2. Windows and

40. Windows
Microsoft Windows is a family
of operating systems for
personal and business
computers.

41. Windows dominates the
personal computer world,
offering a graphical
user interface (GUI), virtual
memory management,
multitasking, and support for

43. Mac OS is the official name of the
Apple Macintosh operating
system. Mac OS features a
graphical user interface (GUI)
that utilizes windows, icons, and
all applications that run on a
Macintosh computer have a

45. Linux is a freely distributed
open source operating system
that runs on a number of
hardware platforms. The Linux
kernel was developed mainly
by Linus Torvalds and it is

48. Mobile Operating Systems

49. Popular mobile operating
systems include iPhone OS /
iOS and Android OS.

50. The mobile OS is responsible
for determining the functions and
features available on your device,
such as thumb wheel, keyboards,
WAP, synchronization with
applications, email, text
messaging and more.

51. The mobile OS will also
determine which third-party
applications (mobile apps) can
be used on your device.

52. Activity: My Own Computer
Your going design your own computer
company, use these guide questions:
1. Name of your computer.
2. Logo design of your
computer.
3. Features and capability of
your computer.