Q1.1 Describe one's-complement and two's complement notation. [5 ma Show how you would use twos-complement notation to perform the following calculation: 12-47 Q1.2 Convert the following numbers from: [5 mar (i) Decimal to Binary: 127 (ii) Decimal to Hexadecimal: 17 and 94 (iii) Hexadecimal to Binary: 1A and 65 Q1.3 Draw a truth table (having inputs A and B) for the AND, OR [5 marl and XOR Boolean operations. Q1.4 Add the following binary numbers: [5 mark (i) 111011 to 111 (ii) 100111 to 10011 Show all steps taken. Q1.5 Describe what a register is in a computer system. As part of [5 marks your answer discuss the function of the registers: (i): Program Counter (ii): Instruction Register