Please solve this fast related to qbasic​

Amain idea is supported, explained, or expanded on with a numbers b. a concluding statement c. details d. a topic sentence. im e paragraphs reset nex next

Design a pos circuit that displays the letters a through j on a seven-segment indicator. the circuit has four inputs w, x, y, and z which represent the last 4 bits of the uppercase ascii code for the letter to be displayed. thus, if wxyz = 0001 then "a" will be displayed. (any answer with 22 or fewer gates and inverters, not counting any for the inputs, is acceptable)

Which of these is most responsible for differences between the twentieth century to the twenty-first century?