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web browser interface
i know nowday majority datacomm devices like modem, voip can be configured through web browser interface.simply type in the device ip address in browser will do.
but anyone know how to do this...i means the hardware design.coz i m designing a circuit and think to add in...
Re: ring buffer
u means that ripple counter will only decreased the modem's clock frequency right? so how about it's data signal?when i change its clock speed then should i change the data's frequency too?currently the modem is running synchronous data...
thanks lot
what is ring buffer...
right now i need a "chip" to convert modem clock n data to another speed...so can i use ring buffer to do it?
there will b a data and clock signal coming into this "chip" and this chip take the incoming data and clock output to somewhere else but in different clock...
hi...i need a buffer chip which can convert a modem's data n its clock to another speed of data and clock.anyone know what kind of buffer chip can i use? preferable with 64k buffer
hi....i assign a P2.1 as a output pin n connected it to a base of transistor....as attached pic...the intention of doin so is to make use of tat p2.1 to control the relay through a transistor...the relay supply is +12V....i connected the collector pin of tat transistor to the ground pin of...
Re: LCD command
i m using atmel microcontroller...8051...currently wat i done is send a lcd command 18h to lcd for it to shift the screen one place to left...but this will shift the whole lcd screen wic i don want...is there any command for lcd toshift only the top row?
hi...anyone know what is the command for 1st row lcd's screen to shift one place to left...i know there is such lcd command 18h is used to shift the whole lcd screen one place to left...but i do not want to shift the whole screen...jus wanna move the 1st row...thanks
some general knowledge
suddenly think of something...can someone clear my doubt...all regarding 8051 question...
1.what is the meaning of "port1 output can sink/source TTL input?i understand that when 1 are written to that port 1,they r pulled high by internal pull up...but y must be internal...
Re: lcd display
thanks...ya basically what u said is correct...so now the problem is on the data rate i think...the data rate from that serial device may b too fast for user to catch up...so i think i would need a buffer or what to slow down the dispaly spped on lcd...what kind of buffer can i...
hi...i need some lcd display to show the asynchronous output of a device...that device may send out a continuous words to my microcontroller upon the request...so i wish to have my lcd to display those words in scrolling manner...from right to left...must b slow enough for user to b able to...
emm....well...but for my project my microcontroller wil need to wait for user response by pressing a button.so actually if nothing happen my microcontroller will jus polling to detect the button pressed.so far what i did is:
scan: jnb p1.0,scan
wait: jb p1.0,wait
xxxx...
hi...thanx for helps....
if put the micro to idle mode does it means that the micro can works longer?
i know all the semi conponent has a lifespan but jus wondering if i let my micro keep working without rest would it shorten my chip...
thanz
hi everyone...currently i m doin a microcontroller project...i want to know if i let my microcontroller running (scanning the switch by pooling method) continuesly without pause...wil it shorten my microcontroller life span?let's say the system is running for year or what...n it is a must for my...
synchrous question
hi...anyone can tell me the mechanism of synchronous data transmittion? or is there any good reference on this topic? coz i m doin a syncronous speed converter.but not very sure how to re-establish the data in different spped...meaning the clock?need to re-establish the clock...
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