LMC Recap

Presentation

•

Computers

•

12th Grade

•

Practice Problem

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Easy

C Norris

Used 7+ times

FREE Resource

13 Slides • 19 Questions

LMC Recap

Lesson 2

What is this?

Mnemonics for LMC

ADD
SUB
STA
LDA
INP and OUT
DAT
HLT

Then we looked at branching

This allowed us to jump to different parts in our program

Open Ended

What were the 3 types of branching?

Type response here

Open Ended

We then looked at the addresses of where data is stored. What were the 4 types of addressing we studied?

Type response here

Open Ended

What were the symbols and which type of addressing did they represent?

Type response here

Multiple Choice

The LMC performs all THREE except

Execute

process

decode

fetch

Multiple Choice

What does the accumulator register do?

This stores data that is being used by the CPU (for example in calculations)

This holds personal details

This is used to keep track of all the instructions.

This is where the instructions are stored

Multiple Choice

What Ends the program (Halt)?

HALT

HLT

END

STOP

Multiple Choice

What Outputs the number in the accumulator?

OUT x

OUTP x

OUTPUT x

All of the above

Multiple Choice

What Loads the number in address x into the accumulator?

LAD x

Load x

LDA x

ID4 x

Multiple Choice

What stores the number in the accumulator to address x?

STO x

Store accumulator

LDA

STA x

Multiple Choice

What Input a number to the accumulator?

INT

INP

INPUT

STA x

Multiple Choice

What are the two main types of primary memory?

RAM & ROM

HDD & Flash

Opcode & Operand

First and Second

Multiple Choice

What does the following instruction do in LMC:
A DAT 5

Creates a memory location called B

Creates a memory location labelled 5 which stores the letter A

Create a memory location labelled A which stores the number 5

Creates a memory location labelled C

Multiple Choice

What does the BRA loop do in LMC?

This will keep looping the program until you stop it.

This will loop the program until a certain condition is met.

This will loop the program until the accumulator is 0.

This will loop the program until the accumulator is negative

Multiple Choice

What is the Mnemonic code for the STORE instruction in LMC?

STO

LDA

STA

BRA

Multiple Choice

What is the purpose of Memory Data Register (MDR)?

This holds all the data that needs to be processed.

This carries out the calculations.

This holds the location of where the data will be loaded from or stored.

This register saves information to the hard drive.

Multiple Choice

What is the purpose of the Memory Address Register (MAR)?

This holds the instruction to be carried out by the CPU.

This hold the location of where the data is.

This is used to carry out calculation.

This is used to keep track of which instruction is next.

Multiple Choice

What is the purpose of the Program Counter (PC) register?

This is used to hold the instruction that needs to be carried out.

This is used to save information.

This is used to hold the location of the data.

This is used to store the memory address of the next instruction.

Multiple Choice

What is the purpose of the CPU's registers?

These are used to permanently store data and instructions

These are used to temporarily store data and instructions.

They are used to keep track of the CPU speed.

They are used to check the CPU's processing power

Multiple Choice

What are the two main parts of a program instruction?

RAM and ROM

ALU and Control Unit

Cache and Registers

Opcode and Operand

LMC Recap

Lesson 2

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