serial
adjective
uk/ˈsɪəriəl/ usused to describe something that is done in a series:
The novels were first published in serial form.
used to describe someone who does something several times:
A serial litigant earned thousands of pounds by claiming ageism.
IT
used to describe computer data that is sent one unit at a time:
Serial data transmission implies that one bit is sent after another.
Compare
parallel