Texas Instruments Portable BASIC Computer (1983)
Initializing...
PRINT "HELLO WORLD" - Display textPRINT 2+2 - Math operations10 FOR I=1 TO 1020 PRINT I30 NEXT IRUN - Loop programLIST - Show programNEW - Clear programEnter - Submit command (same as ENTER key)Backspace - Delete last characterLeft/Right Arrow Keys - Scroll through the 80-character buffer (31 chars visible)Shift - Uppercase lettersCtrl+Esc - BREAK (interrupt running program)