Commodore 64C - Understanding RAM and ROM Memory

about ram and rom
You have probably read or heard the terms RAM (Random Access Memory) and
ROM (Read Only Memory) used in connection with computers. These terms refer
to the two types of memory used by a computer in processing information.
RAM is memory that you can use AND change. For example, you can use RAM
to enter a program, and you can change that program while it is in RAM. The
64C can hold about 64,000 characters (bytes) of information in its RAM. This
memory can be directly used by you, and it can be changed by you.
ROM is memory that can only be used by the computer itself to perform and con
trol its internal activities. ROM cannot be changed by you, although there are
methods that you an use to see what values are in ROM. Your 64C also has 20K of
standard ROM (Read Only Memory).
The computer keeps track of how much RAM you have used and how much you
have left. The computer also keeps track of the contents and status of ROM. So,
unless you are interested in creating your own programs, you generally need not be
concerned about RAM and ROM.