1. Unit 3 Inside the system

2. Three tasks What are on a motherboard? Get your hands dirty!
Label the components
Group 1, 5
Group 2, 9
Group 3, 10
Group 4, 11
Group 6, 12
Group 7
Group 8
Install a DIMM memory module (without breaking it!)
Connect optical disc drive/floppy disk drive to the motherboard (don’t worry about power supply at the moment)
FFC (flexible flat cable)

3. 1. CPU/CPU socket
2. Memory slots
3. Northbridge
4. Southbridge
5. Power connector
6. FDD connector (short for Floppy Disk Drive)
7. IDE connector (short for Integrated Drive Electronics)
8. PCI or PCI Express slots
9. Rear I/O panel
10. Heatsink

4. Open the computer case Power supply unit Heatsink Cooling fan
SDRAM, DRAM, DDR, DDR2
CPU
BIOS
DIMM memory slot
Power connector
Graphics processing unit (GPU)
Northbridge
Southbridge
PCI slot
PCI express slot
DIMM: Dual Inline Memory Module
DRAM: dynamic random access memory
DDR: double data rate RAM
DDR2, DDR2
SIMM: single in-line memory module
SDRAM: Synchronous dynamic random access memory
PIC (peripheral component interconnect)

5. DMI (direct media interface)

6. System-on-a-chip (SoC)
(2013)

7. rewindblog.com (2007)

8. www.hardwarecanucks.com, July 2009

9. Learning objectives
To understand the structure and functions of the CPU
To distinguish between RAM and ROM
To understand how memory is measured (bits, bytes, KB, MB, GB, TB, PB)
To use relative pronouns correctly

10. Central processing unit

11. Registers
Program counter (PC, instruction pointer or instruction address register)
a processor register that indicates where the computer is in its instruction sequence. Depending on the details of the particular computer, the PC holds either the address of the instruction being executed, or the address of the next instruction to be executed.
Instruction register (IR)
Holding the instruction currently being executed

12. How memory is measured ASCII
Uses 7-digit binary numbers (128 possible characters or symbols) to represent letters of alphabets, numbers, punctuation marks and symbols, special functions, such as the carriage return
Can ASCII be used to encode Chinese characters?
Petabyte (PB) = “two power fifty” or “two to the power of fifty” =1 followed by 15 zeros

13. Take-home assignment 2 (group, Unit 4)
Upload to ftp:\\ \upload\ckuo\ScientificEnglish\Assignment2
Deadline
Friday, 17th April 2015, 5:00pm
Late submission will not be accepted!
PowerPoint slides, max. 5
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