Final answer:
The units typically used to express the capacity and speed of a computer's random access memory (RAM) are bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB). The speed of memory cards can be expressed in megabytes per second (MBPS), with a higher number indicating faster data transfer rates.
Step-by-step explanation:
The units typically used to express the capacity and speed of a computer's random access memory (RAM) are bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB). The basic unit of computer memory is the byte (b), and larger units are derived from this. For example, one kilobyte is 1024 bytes, one megabyte is 1024 kilobytes, and so on. The speed of memory cards can be expressed in megabytes per second (MBPS), with a higher number indicating faster data transfer rates.