What's the point of USB keyboards+mice = Re: EPROM and EEPROM

inteface chip) has to keep on poollign the keyboard to see if a key has changed state, and keep on pollign the mouse to see if it has moved. That seesm to be totally the wrong thing to do.. Heck, even the HP9830 has an intettupt on keypress. -tony Actually, the HID (human interface device) class used by mice and keyboards does use an interrupt.? Also, on the device side, pretty much all the transfers can generate an interrupt, depending on how you configure the register.? Also, it's possible to just bypass all the pre-canned "device classes" and just drive the USB raw, which works just fine, and on many small processors is not much more work than driving the UART.? In fact, for some transmissions, it's simpler because you can get just one interrupt for a whole transmission, rather than buffering and error-checking a transmission one byte at at time.