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Microcontrollers > Lesson 1 > Flashcards

Lesson 1 Flashcards

1
Q

What is IC chip 8085 and what are its properties?

A

It is a 8 bit processor with 16 bit address line and +5V DC

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2
Q

What is ALU?

A

Arithmetic Logic Unit

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3
Q

What processes does ALU perform?

A

Addition
Subtraction
OR
XOR
AND
Shift Left/Right
Complement

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4
Q

What is R?

A

Registers

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5
Q

What is M?

A

Memory Register

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6
Q

What is Rs?

A

Register Source

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7
Q

What is Rd?

A

Register Destination

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8
Q

What is Rp?

A

Register Path

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9
Q

What are the instructions included ?

A

Data transfer
Arithmetic
Logical
Branch
Machine control

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10
Q

What is a sensor?

A

Sensors are devices which senses a physical parameter and is converted to electrical signals.

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11
Q

What are the components of the source and modification unit?

A

Sensor
Amplifier
A/D controller

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12
Q

What are the components of the processing unit?

A

ALU
Data path
Timing and control unit

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13
Q

List the components of a microprocessor.

A

The components of a microprocessor are:-
System and Modification unit
Processing unit
Destination unit

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14
Q

What does the system and modification unit consist of?

A

It consists of :-
Sensors
Amplifiers
A/D converter

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15
Q

What does the processing unit consist of?

A

ALU
Data Path
Timing and Control Unit

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16
Q

What is the function of an accumulator?

A

Accumulator is a register which stores the intermediate results of the arithmetic logic unit.

17
Q

What is Central processing Unit?

A

A CPU is an electronic circuitry that executes instructions comprising a computer program.It executes basic arithmetic, logical,controlling and input/output operations specified by the instructions in the program.

18
Q

Explain function of memory and storage unit

A
  1. It stores data and instructions required for processing
  2. It stores the intermediate results of processing
  3. It stores the final results of processing before releasing it on any output device
  4. All inputs and outputs are transmitted through the main memory
19
Q

What are the functions of a control unit?

A
  1. It is responsible for the transfer of data and instructions among the different units of a computer.
  2. It manages and coordinates all units of a computer.
  3. It obtains instructions from the memory , interprets them and directs them to the computer.
  4. it communicates with input/output devices for transfer of data or results from storage.
  5. It does not process or store data
  6. The arithmetic section performs arithmetic operations like addition.
  7. The logical section performs logical operations like comparison.
20
Q

What is instruction register?

A

The external memory moves into this component. It is a part of the CPU’s control unit. It store the instruction that is to be executed.

21
Q

What is the instruction decoder ?

A

They decode the information and send the component pieces of the information to the necessary location.

22
Q

What is the function of the Timing and Control Unit?

A

The Timing and Control Unit comes under the CPU section and it controls the flow of data from the CPU to the other devices. It is also used to control the operations performed by the microprocessor and the devices connected to it.

23
Q

What does the ALU do?

A

It is a combinational digital circuit that performs arithmetic and logical bitwise operations.

24
Q

What are the general purpose register?

A

They are W Z B C D E H and L and they are used to store temporary data.

25
Q

What is a temporary register?

A

It is a 8 bit register that holds data values during arithmetic and logical operations.

26
Q

What is the function of Accumulator?

A

It is a register which stores the intermediate results of ALU.

27
Q

What is a Program Counter?

A

It is called a Instruction Pointer. It is incremented often after fetching an instruction and holds the memory address to be executed.

28
Q

What is a stack Pointer?

A

It is a small register that stores the address of the last program request in a stack.

29
Q

What is a Flag Register?

A

It is a special purpose register . Depending on the value of result after any arithmetic or logical operation the flag bits are set to set(1) or reset(0).

30
Q

What is a data bus?

A

The data bus is bidirectional and carries the data that is to be stored.

Microcontrollers (1 decks)

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