CS1102 Lecture 4 Computer System Hardware

• Computer System (Slide#2)

• Input (Slide#3-10)

Keyboard, arrangement of keys

Mouse

Optical scanners

Bar Code and RFID Readers

Others

• Output (Slide#11-16)

Monitor

Printer

• Ergonomics (Slide#17-19)

• System Unit (Slide 20-42)

Motherboard

Sockets and Chips

Additional Motherboard Components - Slots and Bus lines

Microprocessor, Coprocessor

Memory

Expansion Slots and Cards

Ports

Cables and Power Supply

Storage - Hard Disks, SSD, Optical Discs; Cloud Storage

Brainstorming: Warm-up Question

Warm-up Question

http://trendsupdates.com/wp-content/uploads/2010/02/keyboard1.jpg

https://simple.wikipedia.org/wiki/Dvorak_keyboard

https://en.wikipedia.org/wiki/August_Dvorak

Designed in 1930s by August Dvorak,

an American educational psychologist and professor of education at the University of Washington.

Google: makerbot digitizer

https://www.youtube.com/watch?v=9GfnKKczec0

https://news.xbox.com/en-us/2013/05/28/xbox-reveal-the-eyes-ears-and-brain-of-the-all-new-kinect/

http://www.lightinthebox.com/Wii-Baby---White-Vii-Sport-Game-Console--Remote-Controller--18-Games_p16309.html

https://www.guidingtech.com/69927/bixby-voice-english-s8-us/

https://www.nikon.com/products/fpd/technology/story01.htm

https://en.wikipedia.org/wiki/Carpal_tunnel_surgery

Motherboard

CPU – overheat prevention

http://www.kids-online.net/learn/click/details/micropro.html

word sizes

Multicore processors

https://en.wikipedia.org/wiki/Northbridge_(computing)

Memory Chips

What is “Random Access”?- Can access all positions quickly- An opposite:

RAM – Random Access Memory

Can we take the middle portion?

No!Any computer storage like this?

Yes. Magnetic tape

Magnetic Tape (Sequential Access)

http://education-portal.com/academy/lesson/magnetic-storage-definition-devices-examples.html#lesson

64 bits path;

Separate contacts on each side

Twice as much data as a single SIMM

ROM, BIOS (Basic Input/Output System)

Next: The BIOS looks for the operating system (e.g. The Windows OS in the hard disk) and run it.

Slots, bus lines

http://www.digitalstreetsa.com/real-difference-usb-2-0-usb-3-0/

https://www.everythingusb.com/speed.html

https://www.igcseict.info/theory/3/speed/index.html

http://www.pcguide.com/ref/hdd/op/cacheCircuitry-c.html

How data is stored on magnetic media?

Magnetic storage stores data with magnetic particles on the surface

1. Before data is stored, particles on the surface

are scattered in random patterns.

2. When storing data, the drive's read/write head

magnetizes the particles, and lead them in a positive or

negative direction ( 0 or 1).

https://spyboy.blog/2018/11/09/whats-the-difference-and-which-one-is-good-ssd-vs-hdd/