Tagged Questions

19
votes
6answers
684 views

How precise is the frequency of the AC electricity network?

If I make a digital clock which first detects the AC frequency roughly (whether it is 50, 60, 100Hz, etc), then uses it as its clock pulse source, how precise would it be? Would it work world wide ...
0
votes
2answers
157 views

calculating FSM's maximum clock frequency

Let's assume we have the Truth Table for our Finite state machine. How can we determine the maximum clock frequency for the system, under the assumptions that the wire delay is 0.3 ns , flip-flop ...
2
votes
1answer
359 views

Inexpensive Frequency Counter and Display for clock generator

I have the desire to add a frequency display for a clock generator. Certainly not necessary, I can use my DNN, but it would be nice, I found a veritable plug & play frequency counter and LDC ...
4
votes
2answers
421 views

Odd number frequency divider

Important note: You are not helping me do my homework. This is for a competition for engineering students, that encourages you to "use your network" ;) I've got this pattern for a frequency divider ...
1
vote
1answer
154 views

Can the frequency of the SPI sck on an mbed be adjusted?

I'm trying to control a serial dataflash memory through the SPI interface of an mbed. SCK from the mbed is connected to CLK of the dataflash memory. I'm not sure, but I'm starting to suspect that this ...
7
votes
2answers
614 views

Is it true that the power line frequency is kept accurate by atomic clocks?

I've heard rumors that the power line frequency is kept stable and accurate by syncing it with atomic clocks. Is this true? What kind of accuracy does it have? Is this true everywhere?
3
votes
3answers
281 views

Lowering PIC Clock Frequency

How do I lower the clock frequency of a PIC18F2550 and recalculate the peripheral dividers? I'm trying to make it run cooler. Currently, it runs at 12MIPs/48mhz (USB-CDC-ACM).
4
votes
2answers
531 views

Relation between Power consumed and MCPS (million cycles per second) consumed on a processor

I have been working on a ARM cortex A8 board on mp3 decoder. While doing this I have a requirement saying the mp3 decoder solution I am doing should consume 50mW. This generated few questions in my ...