Question

Write a Little Man program that outputs the sum of n number of input values.

Answer 1

CODE FOR THE GIVEN PROGRAM IN LMC(LITTLE MAN COMPUTER) IS:

  INP

STA NUMBER

LOOP LDA TOTAL

ADD NUMBER

STA TOTAL

LDA NUMBER

SUB ONE

STA NUMBER

BRP LOOP

LDA TOTAL

OUT

HLT

NUMBER DAT

TOTAL DAT 0

ONE DAT 1

INSTRUCTION SET FOR THE ABOVE LMC IS:

MNEMONIC	NAME	DESCRIPTION
INP	INPUT	This is used to retrieve the data from user and stores it in accumulator.
OUT	OUTPUT	This is used to display the output or final result in accumulator.
LDA	LOAD	This is used to load the accumulator with the contents of memory address.
STA	STORE	This is used to store the value in accumulator in memory address given.
ADD	ADDITION	This is used to add the contents of memory address to accumulator.
SUB	SUBTRACT	This is used to subtract the contents of memory address from the accumulator.
BRP	BRANCH IF POSITIVE	This is used to jump to the address given if the accumulator is zero or positive.
HLT	HALT	This is used to stop the code.
DAT	DATA LOCATION	This is used to associate a label to a free memory address. An optional value can also be used to be stored at memory address.