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[1] the accumulator is meant to be an operand. so there is no requirement for the operand address field for one operand in the instruction. this results in short of CPU supports zero address instructions. Normally CPUs have two types of instructions:
1)zero address
2)single address
the single address instruction have one operand in main memory and the other in accumulator.
[2] instruction cycle takes less time. it saves time in instruction fetching due to the absence of operand fetching due to the absence of operand fetch.
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What is Single accumulator CPU organization?
An accumulator machine, also called a single accumulator organisation , or a CPU with accumulator-based architecture, is a kind of CPU where, although it may have several registers, the CPU mostly stores the results of calculations in one special register, typically called "the accumulator". Historically almost all early computers were accumulator machines; and many microcontrollers still popular as of 2010
What are the advantages of a lead-acid accumulator over a dry leclanche cell?
It is rechargeable
What are the advantages of a multiprogramming operating system?
it increases the CPU utlisation cpu is never ideal
The Intel x86 family of computers is based on what CPU?
cisc cpu
What are some of the advantages of AMD cpu processors?
The advantages of an AMD CPU processor includes cheaper price tag and good for gaming. Other advantages include a longer life of one's motherboard and suitability for intense graphic use.
How many bits are contained in the A register of a 8085 CPU?
8085 is a 8 bit microprocessor and so A register which is also known as accumulator is also 8 bit.
What are the advantages of using central processing unit?
Computers don't work without a CPU, so there are no advantages or disadvantages.
What are the advantages and disadvantages of time sharing systems?
1.high CPU efficiency. 2.each user gets CPU time.
What are the advantages and disadvantages of time sharing operating systems?
1.high CPU efficiency. 2.each user gets CPU time.
What are the advantages of having an Intel CPU?
The advantages of having an Intel CPU are that is uses little electricity while competitors use a lot. They also generate less heat because they use less electricity.They are compatible with most networks whereas the competitors are not.
To draw diagram of accumulator?
A mechanical, or electrical accumulator???
How do you draw timing diagram of ADD M instruction?
I'm assuming that you mean "Add the contents of memory to an accumulator and place the sum back in the accumulator". First, the address of the memory location needs to be placed on the address bus and the control lines to memory need to be driven in such a way as to tell the memory that a write operation has been requested (usually enabling OE and synchronizing with a clock). Next (one or more clock cycles later depending on the type of memory being used), the data is returned from the memory. It must then be routed to the ALU. The value in the accumulator must also be moved to the ALU and can be performed in either the first or second CPU cycle, depending on the internal architecture of the CPU. It is probably safest to do this in the first cycle. Next the ALU must perform the addition instruction (third CPU cycle). Finally, in the fourth cycle, the result can be moved from the ALU back to the accumulator.
