The number of instructions that can be executed per second is calculated
as follows.
CPU clock frequency ÷ Clocks necessary to execute one instruction
= 200MHz ÷ 0.5 clocks
= 200 × 106 clocks per second ÷ 0.5 clocks per instruction
= 400 million instructions per second
Reference
FSB
Abbreviation for “Front Side Bus.”
Computer system
●Internal bus
An “internal bus” is a path of transmission used to exchange data inside
the CPU.
The “core clock frequency” refers to the clock frequency of the internal
bus.
Chapter 8
(3)Bus width
A “bus” is a path used to exchange data between devices. The “bus
width” indicates the number of signal lines that make up the bus, and is
indicated in bit units. The devices and CPU inside of a computer are physically connected by buses.
An “internal bus” refers to a bus that is used to exchange data inside the
CPU. A 32-bit CPU for example, exchanges 32 bits of data inside the CPU
for every one clock (representing the interval in which the clock circuit
sends one timing signal). An “external bus” connects the CPU with various devices, and is also called a “FSB (Front Side Bus).”
●External bus (FSB)
The “external bus” is a path of transmission used to exchange data between the CPU and memory or peripheral devices.
The “external clock frequency” refers to the clock frequency of the external bus, and is also called the “FSB clock frequency.”
8-1-2 Storage device
A “storage device” is a device that stores data including data required for
computer processing.
Storage devices can be categorized into “memory” or “storage media”
based on their type and function.
1
Memory
“Memory” broadly refers to a device that is used to store programs and
data required for processing in the operation of a computer. Memory relies
on the use of integrated circuits (semiconductors). Also referred to as
“main memory.”
190