41
a dollar sign. Some numbers cause the printer to do other things, too. For instance, sending a 7 sounds the printer’s bell.
Taken together, these numbers and their meanings make up the ASCII code (pronounced
There are a number of different ways to represent an ASCII code, depending on how you are using it. For example, the ASCII codes for the upper case letter “A” are 65 (decimal) or &H41 (hexadecimal). Or you can just call it “A”. Appendix B shows all of the ASCII codes.
BASIC uses the CHR$ function to represent ASCII char- acters and many functions. To print the letter “A” we would enter LPRINT CHR$(65). To make the printer’s bell sound, we would enter LPRTNT CHR$(7). In general, we print a character by entering LPRINT CHR$(ASCZZ code) to the printer.
We can also use hex ASCII codes. Although we use only decimal ASCII codes in this manual, in some applications it will help if you understand what a hex code is. “Hex” is short for hexadecimal and refers to a
nControl codes
ASCII codes with values of 32 or less do not correspond to the keys on the keyboard: These codes control many of the printer’s functions. so we call them control codes. To enter a control code from the keyboard, we have to press two keys at the same time - the “control” key and one other. The other
key determines what code is
