Suppose an instruction takes 4 cycles to execute in an unpipelined CPU: one cycle to fetch the instruction, one cycle to decode
the instruction and fetch any operands, one cycle to perform the ALU operation, and one cycle to store the result. In a CPU with a 4 stage pipeline, that instruction still takes 4 cycles to execute, so how can we say the pipeline speeds up the execution of the program?
Answer: Instruction pipelining is a technique for implementing instruction level.
Pipeline speeds up the execution of a program by increasing the Central Processing Unit throughout (Number of instructions completed per unit time). The increase in instruction throughput means that a program will run faster with a lower total execution time.
One of the founders of Foursquare is Dennis Crowley. The other is Naveen Selvadurai. I know you didn't ask for both but I wanted to give them to you just in case. I hope this helps! (:
I believe the correct answer is the first option. The primary difference between 3g and 4g cellular systems would be that 4g systems have faster transmission as compared to 3g. The G would mean generation. The very difference of both is their speeds.
