serial data buffer?

[mister ron]

hi,

looking for some advice please.
I am setting up a swipe card reader for a project, my data is usually fed direct to the pc, however I would like to know if it is possible to set up some kind of storage / buffer to hold data being recorded while the PC is switched off. I have seen off the shelf "mobile swipe readers" which must do this, just want to know if this is possible to set up from a hobbyist / newbie perspective.

any advice / help on how to purue this idea would be greatly appreciated.

 

[Papabravo]

Yes this is possible. Many microcontrollers come with EEPROM or data flash memory that will retain its values even if your microcontroller loses its power.