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motherboard, bus and machine cycle
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MOTHERBOARD, BUS AND MACHINE
CYCLES
Caleigh Crowell
Jacob Moore
What Is A Motherboard?
Primary Circuit Connects all core components
Why A Motherboard Matters Allows components to communicate General-purpose and special-purpose
Who Has A Motherboard
Desktop PCs Notebook PCs Cell phones IPods Servers Supercomputers Outside devices to be connected to the
system components
Picture of IPhone Motherboard
Personal Computer Motherboard Sockets of microprocessor, main
memory, ROM, expansion slots Also includes buses
Different Size Motherboards Small ex. netbooks, tablets, or smart
phones Large ex. Alienware Area-51 ALX
desktop comptuer
What is A Bus?
Subsystem Transfers data
Why Does A Bus Matter?
Connects components of computer system
Speed of the Bus
Impact performance of a CPU
Front Side Bus
More commonly known as the FSB Considered the most important bus Connects the CPU to the northbridge
Other Bus’s
Internal Bus PCI Bus - Connects external devices to
the core system components through expansion slots, or USB or PCI connections.
LPC Bus - Connects ROM and sometimes other input devices to the CPU.
Machine Cycles
Definition
Machine Cycle - used as an orderly method of processing software instructions.
Why This Matters
Provides organized method for the processor to carry out instructions from the server.
Without the machine cycle the processor would not be able to execute software code.
Step 1
Fetch
Instructions are fetched from primary storage (RAM) or its cache memory.
Step 2
Decode
The control unit decodes the instruction and then sends it to the arithmetic logic
Step 3
Execute
The decoded instruction is sent to the ALU to execute.
Step 4
Store
The results of the instructions are stored back primary storage.
Machine Cycle Facts
Today’s processors can overlap machine cycles and even execute multiple instructions simultaneously.
Machine Cycle’s keep computers running smoothly, and processing orderly.