Q3: Parallel operation is preferred because (A) it is faster than series operation (B) it requires less memory (C) circuitry simple (D) all of these Q4: Arithmetic Logic Unit I. Perform arithmetic operations. II store data III perform comparisons IV communicate with input devices Of the above the correct answer is (A)I only (B) III only (C) I and II (D) I and III Q5: Registers which are partially visible to users and used to hold conditional codes (bits set by the CPU hardware as the result of operations), are called (A) PC (B) Memory Address Registers (C) General Purpose registers (D) Flags Q6: One of the main features that distinguish microprocessors from microcomputers is (A) words are usually larger in micro processors (B) words are shorter in microprocessors (C) microprocessor does not contain 1/0 devices (D) computer is not fully integrated