MS-CIT

1. SHRI BALAJI
INFOTECH

2. UNIT – 5
System Unit
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3. What is System Unit ?
The system unit, also known as a "tower"
or "chassis," is the main part of a desktop
computer. It includes the motherboard,
CPU, RAM, and other components. ... The
term "system unit" is often used to
differentiate between the computer and
peripheral devices, such as the monitor,
keyboard, and mouse.
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4. A desktop computer is a personal computer designed for
regular use at a single location on or near a desk or table
due to its size and power requirements . The most common
configuration has a case that houses the power
supply, motherboard (a printed circuit board with a micro
processor as the central processing
unit (CPU), memory, bus, and other electronic
components), disk storage (usually one or more hard disk
drives, solid state drives, optical disk drives, and in early
models a floppy disk drives);
a keyboard and mouse for input; and a computer
monitor, speakers, and, often, a printer for output. The case
may be oriented horizontally or vertically and placed either
underneath, beside, or on top of a desk. 4

5. A laptop is a personal computer that is small enough to sit
in a person's lap, and is designed for mobile uses. Also
called notebooks, laptops are smaller, thinner and lighter
than most desktop PCs, and as of 2011,
many laptops included powerful capabilities that rivaled
desktops.
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- Simply 2-in-1, is a portable computer that has features of
both tablets and laptops. ... 2-in-1 PCs consist of portable computer components within
light and thin chassis, and exemplify technological convergence.
- A gaming computer, also known as a gaming PC or gaming
rig, is a personal computer designed for playing video games that require a high amount
of computing power.
Ultrabook is an Intel specification and trademark for a line of high-end subnotebook
computers featuring reduced bulk without compromising battery life. Ultrabooks use low power intel
core processors, solid state drives, and a unibody chasis.

6. A tablet computer, commonly shortened to tablet, is a mobile device, typically with
a mobile operating system and touchscreen display processing circuitry, and a
rechargeable battery in a single, thin and flat package.
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• No keyboard and mouse.
• Low processor speeds for work. ...
• Less portable than a mobile phone.
• Tablets tend to lack ports. ...
• They can be fragile. ...
• They can cause ergonomic
discomfort.
• 1. They're so light and portable.
• You can get connectivity anywhere.
• A tablet is more affordable than a laptop.
• Tablets 'wake up' instantly.
• They make excellent portable entertainment systems.
• They're great for web browsing.
• They're handy for giving presentations.
• You can give one to your kids.

7. a mobile phone that performs many of the functions of a
computer, typically having a touchscreen interface, Internet
access, and an operating system capable of running
downloaded apps.
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A wearable computer, also known as a wearable or body-
borne computer, is a small computing device worn on the
body. The definition of 'wearable computer' may be narrow or
broad, extending to smartphones or even ordinary
wristwatches.

8. 8
Personal computers come in different sizes, shapes, and capabilities. So they look different and they have
different features

9. 9
• Whatis system unit ?
• Describeandcomparethe five mostcommon types of
personalcomputers.
• Whataretower units ?What isanall in one ?
Whatis a minitablet ?

10. 10
Ram
Heat
sink
Expansion
Slot
Cmos
battery
Microprocessor
Slot

11. Sockets
› A is the array of pins and the securing mechanism that
hold a processor in place and connect the motherboard to the
available processing power. There are
different sockets depending on what generation CPU is
supported.
› In a computer system, a is a set of electronic
components in an integrated circuit known as a "Data Flow
Management System" that manages the data flow between
the processor, memory and peripherals. It is usually found on
the motherboard.
The system board is also called the motherboard, main-board, planar board, or logic board., A
motherboard is the main printed circuit board found in general purpose computers and other
expandable systems. It holds, and allows, communication between many of the crucial electronic
components of a system, such as the central processing unit and memory, and provides connectors for
other peripherals.
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12. 12
Slots
An expansion slot refers to any of the slots on a
motherboard that can hold an expansion card to expand the
computer's functionality, like a video card, network card, or
sound card. The expansion card is plugged directly into
the expansion port so that the motherboard has direct
access to the hardware.
Bus Lines
A bus line is a subsystem used to transfer data between the
insides of a computer or between multiple computers. ... An
internal bus connects the inside of the computer such as
the CPU and memory to its motherboard. Internal buses can be
referred to as local buses since they connect to local devices.

13. 13
• Whatis systemboard,andwhatdoesit do?
• Defineand describesockets, slots, andbus lines.
• What arechips ?How arechips attachedto the system board?

14. Microprocessor Chips
Microprocessor chips (MPU) are silicon devices that serve as the central
processing unit (CPU) in computers. They contain thousands of electronic
components and use a collection of machine instructions to perform
mathematical operations and move data from one memory location to another.
Microprocessor
Speciality Processor
Specialty Processors on the Mainframe. ... The basic idea of a specialty
processor, is that it sits alongside the main CPUs and specific types of
"special" workload is shuttled to the specialty processor to be run
there, instead of on the primary CPU complex
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A microprocessor is an electronic component that is used by a computer to do its
work. It is a central processing unit on a single integrated circuit chip containing
millions of very small components including transistors, resistors, and diodes
that work together.

15. 15
• Nameand describethe two components of
microprocessors?
• Defineword,clock speed,multicore chip, andparallel
processing.
• What arespecialty processors? Describe coprocessors?

16. Memory
RAM
RAM (Random Access Memory)
is the hardware in a computing
device where the operating
system (OS), application
programs and data in current
use are kept so they can be
quickly reached by the
device's processor.
In computing, memory refers to a device that is used to store information for immediate use in a
computer or related computer hardware device. It typically refers to semiconductor memory,
specifically metal–oxide–semiconductor memory, where data is stored within MOS memory cells on a
silicon integrated circuit chip
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ROM
ROM stands for read-only memory.
It's used to store the start-up
instructions for a computer, also
known as the firmware. Most
modern computers use flash-
based ROM. It is part of the BIOS
chip, which is located on the
motherboard
Flash Memory
Flash memory is an electronic
non-volatile computer memory
storage medium that can be
electrically erased and
reprogrammed. The two main
types of flash memory are named
after the NAND and NOR logic
gates.

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• Whatis memory ? Nameanddescribeitsthreetypes.
• Whatarecachememory, DIMM, and virtualmemory?
• Define ROM andflash memory.

18. Expansion Slots and Cards
Graphic Cards
A Graphics Card is a piece of
computer hardware that produces
the image you see on a monitor.
The Graphics Card is responsible for
rendering an image to your monitor,
it does this by converting data into
a signal your monitor can
understand.
An expansion slot refers to any of the slots on a motherboard that can hold an expansion card to expand
the computer's functionality, like a video card, network card, or sound card. The expansion card is
plugged directly into the expansion port so that the motherboard has direct access to the hardware
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Network Interface cards (NIC)
A network interface controller is a
computer hardware component
that connects a computer to a
computer network. Early network
interface controllers were
commonly implemented on
expansion cards that plugged into a
computer bus.
Wireless Network
A wireless network is a
computer network that uses
wireless data connections
between network nodes.
Wireless networking is a
method by which homes,
telecommunications networks
and business installations

19. 19
• Whatareexpansionslots andcards? Whatarethey used
for ?
• Listanddescribethree commonly used expansioncards.
• What areSD cards?Howarethey used ?

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THANK YOU