Specifications

Commands - 58
EXAMPLE: 10 ON KEYPAD$ 24 GOSUB 500
20 DISPLAY (1,0);
30 INPUT KEYPAD$ 10,"Enter weight",WEIGHT
40 PRINT WEIGHT
50 INPUT KEYPAD$ 10,"Enter name ";NAME$
.
.
.
500 C$ = KEYPAD$(1)
510 RETURN
The ON KEYPAD$ syntax above may be different for your card.
ERROR: <Data negative> - echo port
<Data > 255> - echo port