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What is the time to execute a 3 clock cycle instruction in a 25Mhz processor?
Wiki User
∙ 14y ago
The time to execute a 3 clock cycle instruction in a 25MHz processor is 120ns.
One clock cycle is 40ns, 1/25Mhz, so three of them are 120ns.
Wiki User
∙ 14y ago
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What is the pace of the system clock called?
The pace of the system clock, called the clock speed, is measured by the number of ticks per second. The faster the clock speed, the more instruction the processor can execute per second.
What is the pace of the systems clock called?
The pace of the system clock, called the clock speed, is measured by the number of ticks per second. The faster the clock speed, the more instruction the processor can execute per second.
What no of instruction will be execute by using only one clock pulse in 8085 microprocessor?
There are no instructions in the 8085 that execute in only one clock pulse. The minimum number of clock cycles is four; three for instruction fetch and one for instruction decode/execute.
What can the processor execute more of with a faster clock speed?
Instructions
What advantage do dual-core processor and quad-core processor have over single-core processor?
The most gaping advantage can be very easilly explained through example: Single core processors have a single thread, and can process a single set of instructions per clock cycle. This looks like this (Saying this processor can process 2 instructions a clock): (Note this is in an optimal setting where data is perfectly threaded) Clock 1: Instruction 1; Instruction 2; Clock 2: Instruction 3; Instruction 4; Clock 3: Instruction 5; Instruction 6; Clock 4: Instruction 7; Instruction 8; Dual-Core processing would do this same instruction set much quicker: Clock 1: Instruction 1; Instruction 2; Instruction 3; Instruction 4 Clock 2: Instruction 5; Instruction 6; Instruction 7; Instruction 8 In a perfectly threaded application, two equivilent-performance cores on a dual core processor would power through the work twice as quickly as a single-core model. A quad-core with these specs would do the entire instruction set in a single clock. Even if it isn't always a 2x increase, multiple-core procesors have a distinct advantage in a very large range of applications.
What is a CISC processor?
"CISC" stands for Complex Instruction Set Computer, CISC processor can execute complex instructions in one or more clock cycles. It is meant to differentiate it from a RISC or Reduced Instruction Set Computer, which can only perform one simple instruction in (usually) one clock cycle. A CISC is meant to have many machine level commands carried out as part of a single assembly command. The assembly command is broken into a series of "micro-code" commands which are executed internal to the processor by a "micro-code sequencer".
Processors that can execute more than one instruction per clock cycle?
super scalar
Timing diagram of 8085?
Timing Diagram is a graphical representation. It represents the execution time taken by each instruction in a graphical format. The execution time is represented in T-states.Instruction Cycle:The time required to execute an instruction is called instruction cycle.Machine Cycle:The time required to access the memory or input/output devices is called machine cycle.T-State:The machine cycle and instruction cycle takes multiple clock periods.A portion of an operation carried out in one system clock period is called as T-state.MACHINE CYCLES OF 8085:The 8085 microprocessor has 5 (seven) basic machine cycles. They areOpcode fetch cycle (4T)Memory read cycle (3 T)Memory write cycle (3 T)I/O read cycle (3 T)I/O write cycle (3 T)Each instruction of the 8085 processor consists of one to five machine cycles, i.e., when the 8085 processor executes an instruction, it will execute some of the machine cycles in a specific order.The processor takes a definite time to execute the machine cycles. The time taken by the processor to execute a machine cycle is expressed in T-states.One T-state is equal to the time period of the internal clock signal of the processor.The T-state starts at the falling edge of a clock.
What is the difference between an internal and external clock?
AnswerThe internal is located inside your computer. If your running Windows, the time it keeps is display on the lower right side of the screen. An external clock is usually located on another system and can be accessed with software. You can get software to sync your internal clock to that other system. The National Institute for Science and Technology (NIST) hosts a clock that many computer users and businesses sync to.Wow...can that answer be any more wrong?Internal and External clocks are NOT referring to the "time of day" type clocks, they refer to the internal processor clock cycle or an external clock source. The clock cycle of a processor is the time it takes for the processor to execute a data instruction (very basic explanation there) and is measured as the speed of a processor, like a 2.6gHz processor can execute 2.6 billion clock cycles per second.Now this is somewhat misleading as the processor speed itself is probably only 400MHz, but using an External Multiplier (clock multiplier, external clock), you increase the total amount of data the processor can execute in one clock cycle.This is a VERY basic example and I don't have time to really go deep, so it's best to search for a more concise answer if you really require one.
How do you calculate clock cycles in 25MHZ processor?
A Hz is a measure of cycles per second. 25 MHz is 25,000,000 Hz. So divide 1 second by 25,000,000 to find the length of a clock cycle. 1/25000000 = 4.0e-8 seconds / cycle
How do pipelining and the system clock affect processing speed?
With pipelining, the CPU begins executing a second instruction before the first instruction is completed. Pipelining results in faster processing because the CPU does not have to wait for one instruction to complete the machine cycle. The system clock is a small chip that the control unit relies on to synchronize computer operations. The faster the clock, the more instructions the CPU can execute per second. The speed at which a processor executes instructions is called clock speed. Clock speed is measured in megahertz (MHz), which equates to one million ticks of the system clock.
Is system clock the heart of computer?
No, the system clock is not the heart of the computer but the micro-processor. The basic characteristics that differentiate the micro-processors includes the instruction set, bandwidth, and the clock speed.
