1. ICT Lecture 2
Computer Hardware I

2. Recap of the previous lecture Results of the homework
Agenda
Recap of the previous lecture
Results of the homework
Identify main parts of the computer
Input/output devices/ports
Homework

3. Do NOT write your ID number ID ->CW and Exam
IMPORTANT!!
Do NOT write your ID number
ID ->CW and Exam
Name Surname -> General Communication

4. Recap
Data
Information
Processing

5. Abdukhakimov Sunnatilo – the last
HW some statistics
120 students did the HW
22% response rate
Useinov Akhtem – the 1st
Abdukhakimov Sunnatilo – the last

6. Computer vs. Human

7. Major types of computer system
SUPERcomputers
MAINFRAME computers
MINIcomputers
MICROcomputers
Source:

8. SUPERcomputers
focused on performing tasks with intense numerical calculations
weather forecasting
nuclear simulations, theoretical astrophysics
complex scientific computations
processing speeds are measured in floating point operations per second, or FLOPS
most powerful
very expensive
$800,000 to $2,000,000

9. MAINFRAME computers
capable of handling and processing very large amounts of data quickly
used in large institutions such as government, banks and large corporations
hey are measured in MIPS (million instructions per second)
respond to up to 100s of millions of users at a timemost powerful

10. MINIcomputers class of multi-user computers
lies in between the smallest multi-user systems (mainframe computers) and the largest single-user systems 
Known as servers (file servers, webservers)
used in all organizations

11. MICROcomputers (personal computers)
designed to be used by one person at a time
Typically used at:
Home, school, business
Desktop computers
In-car computers
Game consoles (XBOX, PS 4, Wii)
Mobile
Laptop, ultrabook, netbook
Tablet
Smartphone, phablet
Handheld game consoles (PSP, Nintendo)

12. Desktop Computer

13. Peripheral devices
System Unit

14. Computer Case System Unit
CPU
RAM
Motherboard
Storage (HDD,SSD)
Power supply
Cables
Video card (or other extension cards)
Cooler

16. Input Device
any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer

17. Input devices Keyboard Mouse Trackball Joystick Scanner Touch screen
Digital camera
Microphone
Bar code reader
Graphics tablet
Web camera
Fingerprint reader

18. Output devices
Monitor
Projector
Printer
Speakers
Plotter

19. Output devices
Cathode ray tube (CRT) - Streams of electrons make phosphors glow on a large vacuum tube.
Liquid crystal display (LCD) - A flat panel display that uses crystals to let varying amounts of different colored light to pass through it.
Light-emitting diode (LED) - is a flat panel display, which uses light-emitting diodes as a video display.

20. Output devices Monitors
Size?? 17" or 19" or 20" or 22" or 24"+
Resolution is the number of distinct pixels in each dimension that can be displayed
WQHD x1440 width × height
Full HD 1920x1080
HD x720
Contrast ratio 700:1, :1
Source:

21. Video

23. I/O Input/output devices
Connecting Hardware to the computer:
Hardware needs access through some general input/output connection.
Peripheral device: A piece of hardware like a disk drive, that is outside the main computer.
Port: The pathway for data to go into and out of the computer from external devices such as keyboards.
Device driver: Software addition to the operating system that will allow the computer to communicate with a particular device.

24. USB ports
Source:

25. USB 3.0 10 times faster = 5 Gbits/s Two unidirectional data paths:
one to receive data and the other to transmit

26. Other ports Thunderbolt – up to 10 Gbits/s
FireWire – up to 800 Mbits/s
Thunderbolt –
up to 10 Gbits/s

27. Dedicated Ports
Special ports

28. Summary of Ports

29. Answers for the previous slide
1 - PS/2 mouse port (green). This port is for a PS/2 mouse.
2 - PS/2 keyboard port (purple). This port is for a PS/2 keyboard.
3 - Coaxial S/PDIF Out port. This port connects an external audio output device through a coaxial S/PDIF cable.
4 - DVI port. DVI is a standard for connecting computers to digital monitors and provides a pure digital video signal to a digital flat-panel display or projector.
5 - Video Graphics Adapter port. This port is for a VGA monitor or other VGA-compatible devices.
6 - IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices.
7 - USB 2.0 ports 1, 2, 3, and 4. These four Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices.
8 - LAN (RJ-45) port. This port allows connection to a Local Area Network (LAN) through a network hub, with speed up to 10/100/1000 Mbps.
9 - Line In port (light blue). This port connects a tape, CD, DVD player, or other audio sources.
10 - Line Out port (lime). This port connects to headphones or a speaker or it can function as Front Speakers Out.
11 - Microphone port (pink). This port connects a microphone.

30. HDMI High-Definition Multimedia Interface
compact audio/video interface
Transfers data to compatible computer monitor, video projector, digital television, or digital audio device
HDMI type A plug (male) connector
HDMI type A receptacle (female) connector

32. CW Task will be published on Thursday Deadline Thursday, 21 November
Group formation via the link:
Deadline group formation Friday, 18 Oct
Minimum 4 members, maximum 4 members
Once formed, you can NOT change groups

33. HW Read CW carefully and try to understand what is not clear
Form groups
Choose models and compare Macbook and Asus Zenbook. Which will fit better professional photographer needs?
To be completed in groups!!
Use the table and instructions from CW

34. HW How? Register on gmail.com Go to DRIVE Create a Document
Write the HW in that document
Share with
Deadline Friday, 18 October
If you sent a letter -> I will not check it

35. HW for ME
Facebook
Intranet -> Forum
Feedback on HW 1

36. Reading
Computing Essentials : Complete Edition (O'Leary Series),Chapter 4
AQA Information and Communication Technology. Section 1,2,3

37. Reading
Chapter 3 from “Business Information Systems” by Dave Chaffey