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Computer Systems
Booklet
BY Laurynas Gruzdys
Computer Systems
Booklet
Table of contents
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Page 1
Laptop …………………………………………………………………………………
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Page 3
Mainframe Computers …………………………………………………………
...
Page 5
Internal Computers ……………………………………………………………… Page 6
Different types of storage devices ………………………………………… Page 7
Output Devices ……………………………………………………………………
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Page 9
C
...
D
...
Expanded …………………………………………………………………
...
It also informs you about internal devices, file
storage devices, input devices and output devic‐
es, informa on is wri en in high detail
...
iPad
The third‐genera on iPad (announced as The new iPad, colloquially
some mes known as the iPad 3) is a tablet computer designed, devel‐
oped and marketed by Apple Inc
...
It shipped with iOS 5
...
Anyone, for instance if a person is watching TV and wonders where
did I see that actor they can Google it
...
1
Laptop
A Laptop is a personal computer, it is mobile mean‐
ing that you can carry it around which is an ad‐
vantage in many ways for businesses
...
A
laptop is powered by mains electricity via an AC
adapter, and can be used away from an outlet using
a rechargeable ba ery
...
Laptops are mobile and are good for people that con‐
stantly move work places e
...
supply teachers and
students
...
A PC is a fixed computer, as in you can’t move it around that much so its good
for places like offices, it classrooms
...
The term originally referred to the large cabi‐
nets that housed the central processing unit and main
memory of early computers
...
Use
computers like these
...
wikipedia
...
By contrast, a general‐purpose
computer, such as a personal computer (PC), is designed to
be flexible and to meet a wide range of end‐user needs
...
5
Internal Devices
A Internal device is anything that is installed inside a computer
...
Central Processing Unit
Descrip on
A central processing unit (CPU), also referred
to as a central processor unit, is the hardware
within a computer system or smartphone
which carries out the instruc ons of a comput‐
er program by performing the basic logical in‐
put/output opera ons of the system
...
A random‐access de‐
vice allows stored data to be accessed in very
nearly the same amount of me for any stor‐
age loca on, so data can be accessed quickly
in any random order
...
6
File Storage
A file storage device is a device that can hold data
...
Most of them weigh less than 30 grams
...
Descrip on
Hard drive
A Hard drive is a block‐based data storage device
used for storing and retrieving digital informa on
using non‐volute memory as in it s ll has the data
when the power is off
...
Here are
some examples below:
Digital Camera
Descrip on
A digital camera aka digicam is a camera that can
take video or s ll photographs by recording imag‐
es on an electronic image sensor
...
Digital cameras are incorpo‐
rated into many devices like PDA’s and mobile
phones
...
The tablets may also be used to capture data or
handwri en signatures
...
Many printers are local peripherals
connected directly to a nearby personal comput‐
er
Plo er
Descrip on
An plo er is a computer printer for prin ng
vector graphics
...
8
Computer system data flow
Input device
Output Device
Mouse
Screen/monitor
Processor
Graphics card
Storage
Main memory
Usb s ck
Central processing unit
9
A Mouse is an input device and is used to click
stuff, open up files or do stuff like designing
graphics
...
A Graphics card is a processor because it generates
feed of output images to a output display
...
Central processing unit (CPU) is a Mains memory
because it carries out the instruc ons of a comput‐
er program by performing the basic logical input/
output opera ons of the system
...
You can learn what certain devices are and used
for
...
Output, input, file storage, internal devices are
described in this booklet with nice images next to
them