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HARDWARE
RECOMMENDATIONS
Module 1.3
1
HARDWARE
RECOMMENDATIONS
Module 1.3
2
CONTENT
 Buying a computer
 Buying a computer – system unit
 Buying a computer – peripherals or devices that
connect to the computer
 The value of ICT
 Efficiency, productivity and accuracy
 Accessibility
 New technology
 Test and improve your knowledge
3
BUYING A COMPUTER
4
SOME GENERAL CONSIDERATIONS
WHEN BUYING COMPUTERS:
 Need to be mobile?
 Hardware specifications of the software you want to
use
 Current standard specifications for an entry-level
and a more advanced computer in the category you
are considering
 A legal operating system provided?
Always buy the best product that your budget will
allow -
RAM installed, the size of storage and type of
processor.
5
BUYING A COMPUTER – SYSTEM UNIT
6
CPU or
processor
Responsible for running programs
and processing data
Multiple cores (e.g. quad-core) – like having more than one
processor on the chip
‘Speed’ – measured in Gigahertz (GHz)
Brand name (AMD or Intel) and model (such as Intel i7) can also
be used to identify the processor in an advert
Standard entry-level processor should be sufficient for personal
users, SOHO users and mobile users
Power users – the best CPU they can afford
BUYING A COMPUTER – SYSTEM UNIT
7
Memory
(RAM)
Temporary storage area for data
and programs that are being
processed
If you use more than 4 GB of RAM, you will need to make sure
that you are using a 64-bit version of an operating system,
otherwise you won’t be able to access the entire amount of
RAM you have.
RAM can also be identified by terms such as DIMMS, DDR3 or
DDR-4 RAM.
For any user the more memory that you have installed, the
better.
Power users working with programs such as those used for
video editing will definitely require more memory.
BUYING A COMPUTER – SYSTEM UNIT
8
Hard Disk
Drive
(HDD)
The main, permanent storage area
for all your data and software.
Besides the capacity, hard drives can be identified in adverts by
terms such as SATA and the speed at it which rotates, measured
in RPM.
A special computer, such a file server in a network, will have a
number of large hard drives, because it has to store all the
users’ files.
Solid State Drives (SSDs) use technology that is similar to flash
memory.
Most users will almost never fill the default hard drive size PC.
Power users may need to install a series of hard drives that act
as one unit, which is sometimes referred to as RAID technology.
BUYING A COMPUTER – SYSTEM UNIT
9
DVD Drive An optical drive that can play, read
and write CDs and DVDs
DVD drives – less important than they were in the past.
Flash drives, external hard drives and even the Internet are used
to transfer and back up information.
Often listed as a multi-drives – they read and write (or burn)
DVDs and CDs.
BUYING A COMPUTER – SYSTEM UNIT
10
Port Used to connect external devices
to the computer
Most devices can connect to a USB port.
Most computers will have a network port to connect to a cabled
network.
Modern computers might also have a FireWire or Thunderbolt
port for high speed data and video connections.
While WiFi is not technically a port, many computers now have
built-in support for WiFi.
BUYING A COMPUTER – PERIPHERALS OR
DEVICES THAT CONNECT TO THE
COMPUTER
11
Mouse
Keyboar
d
The most commonly used types
of input devices
Ergonomically designed keyboards and mice, reduce the
impact of RSI.
Wireless or cabled equipment.
Mobile users with portable computer – touch pad instead of
a mouse.
A power user will probably have expensive technology
related to their particular field of interest.
BUYING A COMPUTER – PERIPHERALS OR
DEVICES THAT CONNECT TO THE
COMPUTER
12
Monitor/
screen
The most common output
device for soft copy output
The popularity of tablets and smartphones has led to a lot
more applications (even Windows 8) which are designed to
work well with touch screens.
For most users an entry-level monitor will do just fine.
Power users such as gamers, video editors, photographers
and architects often need larger displays, or they might even
connect multiple monitors.
BUYING A COMPUTER – PERIPHERALS OR
DEVICES THAT CONNECT TO THE
COMPUTER
13
Printer
Used to produce hard copy
output – laser, ink-jet and dot-
matrix printers
Type of printer – factors such as running costs, speed, the
print quality (dpi) and wireless connection
A SOHO or even a personal user – consider a multi-function
printer
Mobile user may want a mobile printer that works with
batteries
BUYING A COMPUTER – PERIPHERALS OR
DEVICES THAT CONNECT TO THE
COMPUTER
14
External
(portable)
storage
Storage devices that connect to
the computer
For most personal users a flash disk is the quickest and
simplest way to transfer data and even make some measure
of backup.
All users can use external hard drives as storage for music
and videos and to back up.
All users find cloud storage useful.
SOHO and power users usually have a need for a large
external storage device.
BUYING A COMPUTER – PERIPHERALS OR
DEVICES THAT CONNECT TO THE
COMPUTER
15
Scanner
Image scanners: capture an
image of whatever is placed in
the scanner Barcode scanners:
read barcodes
Personal users will seldom need a scanner –
they can just as easily photograph the image as scan it.
SOHO or power user who needs to scan documents and
convert them into editable text needs a good quality scanner
and an OCR program.
SOHO or power user who runs a business that deals with
images or photos – probably a good idea to get a good
quality scanner.
BUYING A COMPUTER – PERIPHERALS OR
DEVICES THAT CONNECT TO THE
COMPUTER
16
Disabled user
Visually impaired / Blind
• Braille keyboard and
Braille ‘display’
• Magnification devices
• Large-key keyboards
• Braille printers
Hearing impaired / Deaf
• Vibration devices
Motor control (paralysed /
poor motor control /
arthritic / etc.)
• Eye tracking devices
• Head movement devices
• Large key (outsized)
keyboards
• Large trackballs
• Joysticks
• Foot pedal control
devices
• Sip and puff devices
THE VALUE OF ICT
17
EFFICIENCY, PRODUCTIVITY AND
ACCURACY
 Efficiency: Getting things done with less
cost and effort.
 Productivity: What you get done in a
specific amount of time for a specific
cost (we are focused on increasing
productivity, which means getting more
stuff done in the same amount of time
and for the same cost).
 Accuracy: Ensuring that there are no
errors in input or output.
18
EFFICIENCY, PRODUCTIVITY AND
ACCURACY – CHOICE OF
HARDWARE
Typing in text or data the whole day (as done by a
typist, writer or data capturer)
19
Good quality ergonomic keyboard
Video editing
Largest, fastest possible HDD
Min 8 GB RAM, if possible more
TWO monitors
Converting existing documents to digital format
Automatic sheet feeding scanner
EFFICIENCY, PRODUCTIVITY AND
ACCURACY – CHOICE OF
HARDWARE
Competitive gaming
20
Gaming mouse
Digital artist
Pressure sensitive drawing tablet
Selling products at a till and stocktaking
Barcode scanner
ACCESSIBILITY
 ICT makes knowledge and resources accessible to all
kinds of people all over the world.
21
Remote surgery
Data/information access using
the Internet
Distance education
Cellphone banking such as M-Pesa
Making computers more
accessible for disabled users
NEW TECHNOLOGY
22
WHAT IS REALLY IMPORTANT TO
UNDERSTAND ABOUT NEW
TECHNOLOGY IS THE FOLLOWING:
 It will be smaller, cheaper, faster and more powerful
than what we have today.
 It will use more and more sensors.
 It will be designed to be mobile.
 The battery life should be longer than today.
 It will be designed to be constantly connected and
communicating.
 It will combine new technologies to allow easier and
more effective input and output.
23
TEST AND IMPROVE YOUR
KNOWLEDGE
24
WRITTEN MODULE ACTIVITY
25

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prashanth updated resume 2024 for Teaching Profession
 

1 3 hardware recommendations

  • 3. CONTENT  Buying a computer  Buying a computer – system unit  Buying a computer – peripherals or devices that connect to the computer  The value of ICT  Efficiency, productivity and accuracy  Accessibility  New technology  Test and improve your knowledge 3
  • 5. SOME GENERAL CONSIDERATIONS WHEN BUYING COMPUTERS:  Need to be mobile?  Hardware specifications of the software you want to use  Current standard specifications for an entry-level and a more advanced computer in the category you are considering  A legal operating system provided? Always buy the best product that your budget will allow - RAM installed, the size of storage and type of processor. 5
  • 6. BUYING A COMPUTER – SYSTEM UNIT 6 CPU or processor Responsible for running programs and processing data Multiple cores (e.g. quad-core) – like having more than one processor on the chip ‘Speed’ – measured in Gigahertz (GHz) Brand name (AMD or Intel) and model (such as Intel i7) can also be used to identify the processor in an advert Standard entry-level processor should be sufficient for personal users, SOHO users and mobile users Power users – the best CPU they can afford
  • 7. BUYING A COMPUTER – SYSTEM UNIT 7 Memory (RAM) Temporary storage area for data and programs that are being processed If you use more than 4 GB of RAM, you will need to make sure that you are using a 64-bit version of an operating system, otherwise you won’t be able to access the entire amount of RAM you have. RAM can also be identified by terms such as DIMMS, DDR3 or DDR-4 RAM. For any user the more memory that you have installed, the better. Power users working with programs such as those used for video editing will definitely require more memory.
  • 8. BUYING A COMPUTER – SYSTEM UNIT 8 Hard Disk Drive (HDD) The main, permanent storage area for all your data and software. Besides the capacity, hard drives can be identified in adverts by terms such as SATA and the speed at it which rotates, measured in RPM. A special computer, such a file server in a network, will have a number of large hard drives, because it has to store all the users’ files. Solid State Drives (SSDs) use technology that is similar to flash memory. Most users will almost never fill the default hard drive size PC. Power users may need to install a series of hard drives that act as one unit, which is sometimes referred to as RAID technology.
  • 9. BUYING A COMPUTER – SYSTEM UNIT 9 DVD Drive An optical drive that can play, read and write CDs and DVDs DVD drives – less important than they were in the past. Flash drives, external hard drives and even the Internet are used to transfer and back up information. Often listed as a multi-drives – they read and write (or burn) DVDs and CDs.
  • 10. BUYING A COMPUTER – SYSTEM UNIT 10 Port Used to connect external devices to the computer Most devices can connect to a USB port. Most computers will have a network port to connect to a cabled network. Modern computers might also have a FireWire or Thunderbolt port for high speed data and video connections. While WiFi is not technically a port, many computers now have built-in support for WiFi.
  • 11. BUYING A COMPUTER – PERIPHERALS OR DEVICES THAT CONNECT TO THE COMPUTER 11 Mouse Keyboar d The most commonly used types of input devices Ergonomically designed keyboards and mice, reduce the impact of RSI. Wireless or cabled equipment. Mobile users with portable computer – touch pad instead of a mouse. A power user will probably have expensive technology related to their particular field of interest.
  • 12. BUYING A COMPUTER – PERIPHERALS OR DEVICES THAT CONNECT TO THE COMPUTER 12 Monitor/ screen The most common output device for soft copy output The popularity of tablets and smartphones has led to a lot more applications (even Windows 8) which are designed to work well with touch screens. For most users an entry-level monitor will do just fine. Power users such as gamers, video editors, photographers and architects often need larger displays, or they might even connect multiple monitors.
  • 13. BUYING A COMPUTER – PERIPHERALS OR DEVICES THAT CONNECT TO THE COMPUTER 13 Printer Used to produce hard copy output – laser, ink-jet and dot- matrix printers Type of printer – factors such as running costs, speed, the print quality (dpi) and wireless connection A SOHO or even a personal user – consider a multi-function printer Mobile user may want a mobile printer that works with batteries
  • 14. BUYING A COMPUTER – PERIPHERALS OR DEVICES THAT CONNECT TO THE COMPUTER 14 External (portable) storage Storage devices that connect to the computer For most personal users a flash disk is the quickest and simplest way to transfer data and even make some measure of backup. All users can use external hard drives as storage for music and videos and to back up. All users find cloud storage useful. SOHO and power users usually have a need for a large external storage device.
  • 15. BUYING A COMPUTER – PERIPHERALS OR DEVICES THAT CONNECT TO THE COMPUTER 15 Scanner Image scanners: capture an image of whatever is placed in the scanner Barcode scanners: read barcodes Personal users will seldom need a scanner – they can just as easily photograph the image as scan it. SOHO or power user who needs to scan documents and convert them into editable text needs a good quality scanner and an OCR program. SOHO or power user who runs a business that deals with images or photos – probably a good idea to get a good quality scanner.
  • 16. BUYING A COMPUTER – PERIPHERALS OR DEVICES THAT CONNECT TO THE COMPUTER 16 Disabled user Visually impaired / Blind • Braille keyboard and Braille ‘display’ • Magnification devices • Large-key keyboards • Braille printers Hearing impaired / Deaf • Vibration devices Motor control (paralysed / poor motor control / arthritic / etc.) • Eye tracking devices • Head movement devices • Large key (outsized) keyboards • Large trackballs • Joysticks • Foot pedal control devices • Sip and puff devices
  • 17. THE VALUE OF ICT 17
  • 18. EFFICIENCY, PRODUCTIVITY AND ACCURACY  Efficiency: Getting things done with less cost and effort.  Productivity: What you get done in a specific amount of time for a specific cost (we are focused on increasing productivity, which means getting more stuff done in the same amount of time and for the same cost).  Accuracy: Ensuring that there are no errors in input or output. 18
  • 19. EFFICIENCY, PRODUCTIVITY AND ACCURACY – CHOICE OF HARDWARE Typing in text or data the whole day (as done by a typist, writer or data capturer) 19 Good quality ergonomic keyboard Video editing Largest, fastest possible HDD Min 8 GB RAM, if possible more TWO monitors Converting existing documents to digital format Automatic sheet feeding scanner
  • 20. EFFICIENCY, PRODUCTIVITY AND ACCURACY – CHOICE OF HARDWARE Competitive gaming 20 Gaming mouse Digital artist Pressure sensitive drawing tablet Selling products at a till and stocktaking Barcode scanner
  • 21. ACCESSIBILITY  ICT makes knowledge and resources accessible to all kinds of people all over the world. 21 Remote surgery Data/information access using the Internet Distance education Cellphone banking such as M-Pesa Making computers more accessible for disabled users
  • 23. WHAT IS REALLY IMPORTANT TO UNDERSTAND ABOUT NEW TECHNOLOGY IS THE FOLLOWING:  It will be smaller, cheaper, faster and more powerful than what we have today.  It will use more and more sensors.  It will be designed to be mobile.  The battery life should be longer than today.  It will be designed to be constantly connected and communicating.  It will combine new technologies to allow easier and more effective input and output. 23
  • 24. TEST AND IMPROVE YOUR KNOWLEDGE 24