Hi
Block device is one which reads multiple bytes at once like your hard disk. A
serial device reads one byte at a time. Actually one bit at a time. The hardware
stores till 8 bit and then delivers a byte at once.
Typically devices that have multiple wires connectivity are block devices like
printer and hard disk.(Got to check about printer, right now I am in NT. Also
there are some serial printers to0) The devices which have single (data) wire
connectivity are serial devices as they can transmit only one bit at a time.
Mouse/keyboard/modems are serial devices...
Basically there are two modes of electronic data transmission. Serial and
parallel which imply the device classification roughly. So you got it right...
HTH
Bye
Shridhar
"Dr. Sharukh K. R. Pavri." wrote:
> -
> okay what's a character device and what's a a block device ?
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