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/
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