Mastering Microprocessors

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Questions and Answers

What is the role of a microprocessor in a micro-computer?

Control other devices (correct)
Communicate with other devices
Perform ALU operations
Store instructions in memory

Which device accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output?

Micro-computer
Register array
Microprocessor (correct)
ALU

What are the main components of a microprocessor?

Arithmetic and logical operations
ALU and register array (correct)
General architecture and multi-core processor
Execution unit and bus interface unit

Which microprocessor family has a brief history mentioned in the text?

8086 (D) Signup and view all the answers

What is the function of the bus interface unit in the 8086 microprocessor?

Handle data transfer between the microprocessor and external devices (D) Signup and view all the answers

What is the purpose of the Program Counter (PC) in a computer processor?

The Program Counter (PC) is used to keep track of the address of the memory location containing the next instruction to be fetched. Signup and view all the answers

What are the steps involved in executing an instruction in a computer processor?

The steps involved in executing an instruction are: 1. Fetch the contents of the memory location pointed to by the PC into the Instruction Register (IR). 2. Increment the contents of the PC to point to the next instruction. Signup and view all the answers

What is the function of the Instruction Register (IR) in a computer processor?

The Instruction Register (IR) holds the instruction that has been fetched from the memory location pointed to by the PC. It is used to decode and execute the instruction. Signup and view all the answers

What is the role of the Processing Unit in a computer system?

The Processing Unit of a computer system is responsible for performing arithmetic and logic operations, fetching instructions from memory, storing data in memory, and executing instructions. Signup and view all the answers

What are the two types of control mechanisms for a complete processor?

The two types of control mechanisms for a complete processor are hardwired control and microprogrammed control. Signup and view all the answers

Study Notes

Processing Unit of a Computer System

The processing unit fetches one instruction at a time from memory locations and performs specified operations.
The Program Counter (PC) keeps track of the address of the memory location containing the next instruction to be fetched.

Execution of an Instruction

Step 1: Fetch the contents of the memory location pointed to by the PC, loading the instruction into the Instruction Register (IR): IR ← [PC]
Step 2: Increment the contents of the PC to point to the next instruction.

Registers Involved

Program Counter (PC): keeps track of the address of the memory location containing the next instruction to be fetched.
Instruction Register (IR): holds the instruction to be executed.

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Description

Test your knowledge on microprocessors and the x86 architecture with this quiz! Learn about the role of microprocessors in microcomputers, gain insights into the history of microprocessors (specifically the x86 family), and explore the features and internal block diagram of the 8086 processor. Get an overview of the execution unit, bus interface unit, and general architecture of a Pentium processor. Finally, dive into the world of multi-core processors.