MGMT 104 Lecture Notes - Lecture 3: Central Processing Unit, Computer Data Storage, Control Unit

81 views3 pages

For unlimited access to Class Notes, a Class+ subscription is required.

MGMT 104
FEB 1 2017
“HARDWARE: Input, Processing, and Output Devices”
Hardware components
Central processing unit (CPU):
Arithmetic/logic unit (ALU): Performs mathematical calculations and makes
logical comparisons
Control unit: Sequentially accesses program instructions, decodes them,
and coordinates the flow of data in and out of the ALU, registers, primary
storage, and even secondary storage and various output devices
Registers: High-speed storage areas used to temporarily hold small units of
program instructions and data
Primary storage: Also called main memory and is closely associated with the CPU
Hardware Components in Action
The instruction phase
Step 1: fetch instruction
Step 2: decode instruction
The execution phase
Step 3: execute instruction
Step 4: store results
Instruction time (I-time)
Execution time (E-time)
Processing and Memory Devices: Power, Speed, and Capacity
System unit: Houses the components responsible for processing (the CPU and memory)
All other computer system devices are:
Linked either directly or indirectly into the system unit housing
Processing Characteristics and Functions
Machine cycle time is measured in:
Nanoseconds (1 billionth of a second)
Picoseconds (1 trillionth of a second)
MIPS (millions of instructions per second)
Unlock document

This preview shows page 1 of the document.
Unlock all 3 pages and 3 million more documents.

Already have an account? Log in

Get access

Grade+
$10 USD/m
Billed $120 USD annually
Homework Help
Class Notes
Textbook Notes
40 Verified Answers
Study Guides
1 Booster Class
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Class Notes
Textbook Notes
30 Verified Answers
Study Guides
1 Booster Class