Compares a pair of characters entered by keyboard, Computer Engineering

Assignment Help:

Program: This program compares a pair of characters entered by keyboard.

; Registers used: AX, BX, CX, DX

DATA SEGMENT

                         XX DB?

                        YY DB?

DATA ENDS

CODE SEGMENT

                        ASSUME     CS:  CODE,   DS: DATA

MAINP:                       MOV AX, DATA; initialize data

                                    MOV DS, AX; segment using AX

                                    MOV CX, 03H; set counter to 3.

NEXTP:                      MOV AH, 01H; Waiting for user to enter a char.

                        INT    21H        

                                    MOV XX, AL; store the 1st input character in XX

                                    MOV AH, 01H; waiting for user to enter second 

                                    INT     21H   ;   character.

                                    MOV YY, AL; store the character to YY

                                    MOV BH, XX; load first character in BH

                                    MOV BL, YY; load second character in BL

                                    CMP BH, BL; compare the characters

                                    JNE NOT_EQUAL; 

EQUAL:                     MOV AH, 02H; if characters are equal then control 

                                    MOV DL, 'Y'    ; will execute this block and

                                    INT    21H   ; display 'Y'

                                    JMP CONTINUE; Jump to continue loop.

NOT_EQUAL:           MOV AH, 02H; if characters are not equal then

Control

                                    MOV DL, 'N''   ; will execute this block and

                                    INT 21 H    ; display 'N'

CONTINUE:              LOOP NEXT P   ; Get the next character

                                    MOV AH, 4C H; Exit to DOS

                                    INT 21 H

CODE ENDS

END MAINP


Related Discussions:- Compares a pair of characters entered by keyboard

What is verilog case 1, What is verilog case (1) ? wire [3:0] x; al...

What is verilog case (1) ? wire [3:0] x; always @(...) begin case (1'b1) x[0]: SOMETHING1; x[1]: SOMETHING2; x[2]: SOMETHING3; x[3]: SOMETHING4; endcase

Explain about the client/server computing, Explain about the Client/Server ...

Explain about the Client/Server Computing? Although there are different various configurations, various hardware and software platforms and even various network protocols into

What are language processor development tools, What are Language Processor ...

What are Language Processor Development Tools (LPDTs)? LPDT that is Language processor development tools focuses upon generation of the analysis phase of language processors. T

Using bit wise operator implement nor and nand gate, Q. Write a program t...

Q. Write a program to implement NOR, NAND, XOR and XNOR gates using and without using bit wise operator. Also perform necessary checking. The user has option to give n numbe

C program, In this problem you are given a board in which some of the eleme...

In this problem you are given a board in which some of the elements are placed as shown in diagram below. Each element represents a color. Fill the other elements in the board, suc

Duplicating processes, DUPLICATING PROCESSES : As we mentioned earlier dup...

DUPLICATING PROCESSES : As we mentioned earlier duplicating is a process whereby a master copy is prepared from which a large number of other copies are obtained with the help of

CPE, WHAT IS CPE

WHAT IS CPE

Draw the circuit of A/D converter using a V/F converter, Draw the schematic...

Draw the schematic circuit of an Analog to Digital converter using Voltage-to Frequency conversion and explain its principle of operation. Draw its relevant Waveforms. Ans:

Assembly language programes, Program to calculate the value of the series 1...

Program to calculate the value of the series 1+x+x2+x3+.... +xn. Read the values of ''x'' and ''n'' from the keyboard.

Average access time experienced by the processor, Give the formula for the ...

Give the formula for the average access time experienced by the processor in a system with 2 levels of caches. Ans: Formula is for the average access time experienced by the pr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd