Where is the IR register located?
In the control uni
Which of the following memory types is the fastest/ the slowest CPU access time?
a) Registers 。the fastest
b) Cache 。the slowest
The register name MAR stands for
b) Memory Address Register
Tell if the following register is accessible to the programmer or not-
Program Counter (PC) No
General Purpose Register (GPR) Yes
Condition code register (CCR) No-
Memory Buffer Register (MBR) No
How many lines does the data bus have?
the 8086, the internal data bus comprises 16 separate lines, with each line carrying one 1 or one 0. The word size and the number of lines for the internal data bus are equal.
How many lines does the control bus hav
The majority of system buses are made up of 50 to 100 distinct lines for communication.
Suppose a computer has 20 address lines. What does this number tell you?
First of all, there are 20 address lines. If you access (address) by byte, the unit in each storage unit is already the smallest unit, so there is no need to divide it, which is 2 ^ 20, which is 1M.
How many instructions/operations can an 8-bit CPU possibly have?
由于设定全部指令采用８位固定的ＯＰ字段，故这台计算机最多的指令条数为２８＝２５６条。 因此最多还可以设计出（２５６－ｍ－ｎ）条单操作数指令。 （２）双操作数指令条数最大值为２８条
What is the function of the MAR register?
In a computer, the memory address register (MAR) is the CPU register that either stores the memory address from which data will be fetched to the CPU, or the address to which data will be sent and stored.
How does the fetch-execute cycle work?
During the fetch execute cycle, the computer retrieves a program instruction from its memory. It then establishes and carries out the actions that are required for that instruction.
The cycle of fetching, decoding, and executing an instruction is continually repeated by the CPU whilst the computer is turned on.
What is the benefit of pipelining?
Increase in the number of pipeline stages increases the number of instructions executed simultaneously. Faster ALU can be designed when pipelining is used. Pipelined CPU’s works at higher clock frequencies than the RAM. Pipelining increases the overall performance of the CPU.