What must you do first in order to change the font type size and colour of a particular text

Active listen eliminates barries to communication true or false

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)

All of the following are characteristics that must be contained in any knowledge representation scheme except