<span>Storage costs of magnetic tape are much lower than semiconductor storage (chip storage), but they take longer to access because they are not on-board the system and have to be added manually. Chip memory, on the other hand, can be used as primary storage for a system even with a higher cost because it's typically directly connected to the system board and is much more easily accessible by the system.</span>
The second option, "<span>Use the subject line wisely to let your reader know the main purpose of the e-mail," is most appropriate.
You can find this answer by eliminating the options -- the first option doesn't make sense because if you include all the details in the subject line, it will be too long. The third option, one or two words, would not help the reader know what's in the email. And the last option, putting nothing in the subject line, would also not help the reader know what's in the email.</span>
The answer is BIT. A bit is the smallest unit of data used by a computer. It represents binary digits. Binary digits consist of only 1 and 0. It is known as the computer's language. Hope I helped. Have a nice day