1, Logic gates: (video 1) 5% (1). Write three basic logic gates. this is gate this is gate this is gate (2). If A = 1, B=1; the value of A XOR B is If A = 1, B=0; the value of A XOR B is 2, Data representation: (video 1) 3% (1). Unsigned Integers. For example, 4210=001010102 9810 3010 = (2). Signed Integers. For example, 4210=001010102 But how to represent -30? -3010