Computer Architecture and Organization

Q. Describe the operation performed by the instruction OUT 47 h, AL. Ans : It transfers the content of AL to I/O port 47h. Notice that I/O port number appears as 0047h on the 16 bit address bus and that data from AL appears on the data bus of the microprocessor. Q. Pentium processor has…

Q.1 If the crystal oscillator is operating at 15 MHz, the PCLK output of 8284 is (A) 2.5 MHz. (B) 5 MHz. (C) 7.5 MHz. (D) 10 MHz. Ans: (A) Q.2 In which T-state does the CPU sends the address to memory or I/O and the ALE signal for demultiplexing (A) T1. (B) T2. (C)…

Question 1: A collection of 8 bits is called a. byte b. word c. record   Question 2: The ascending order or a data Hierarchy is  a. bit – bytes – fields – record – file – database b. bit – bytes – record – field – file – database c. bytes – bit- field…

Question 1: Processors of all computers, whether micro, mini or mainframe must have a. ALU b. Primary Storage c. Control unit d. All of above   Question 2: What is the control unit’s function in the CPU? a. To transfer data to primary storage b. to store program instruction c. to perform logic operations d….

Question 1: Where does a computer add and compare data? a. Hard disk b. Floppy disk c. CPU chip d. Memory chip   Question 2: Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory Address Register b. Memory Data Register…