Keil is not generating the right hex file

Hi all I've just started using Keil C51. The first thing I did was to try an compile an example which I already had its hex file(this was compiled by Keil as well). the problem is that when I comiled...
Keil is not generating the right hex file

Hi all I've just started using Keil C51. The first thing I did was to try an compile an example which I already had its hex file(this was compiled by Keil as well). the problem is that when I comiled...
NO ERROR DISPLAYED, BUT THE ANSWER NOT OBTAINED

HI ERIK AND DHAVAL SOLANKI PLEASE CLARIFY ME THE MISTAKE I VE DONE HERE, THIS THE PROGRAM TO INTERFACE FOUR SEVENSEGMENT LEDS (MULTIPLEXING), IN THIS PROGRAM THE DATA WHICH IS STORED IN 90H,91H...
NO ERROR DISPLAYED, BUT THE ANSWER NOT OBTAINED

HI ERIK AND DHAVAL SOLANKI PLEASE CLARIFY ME THE MISTAKE I VE DONE HERE, THIS THE PROGRAM TO INTERFACE FOUR SEVENSEGMENT LEDS (MULTIPLEXING), IN THIS PROGRAM THE DATA WHICH IS STORED IN 90H,91H...
Left and right arrowkeys and the // do not work in the mcu 8051 ide

As the title says the Left and Right arrow keys are not working in the 8051 ide. I installed the latest version I could find on my ubuntu 16.04 machine. Also when I use // for comments I get...