Here in my part of Connecticut (it may be a statewide system), the voter gets a sheet of paper (fairly good-sized) and marks the ballot with a felt-tip pen. After leaving "the booth", the voter slides the paper into a machine (about the size of a floor-sized copy machine) which records the marks and then keeps the paper ballot.
This is about as "computerized" a system as I want to see, insofar as voting is concerned.
I would like to see an additional feature:
Upon recording the ballot, the machine should issue a printed "receipt" that shows how the machine recorded the votes. The voter can examine the receipt to be sure that the "votes recorded" were identical to "the votes cast". (yes, I realize that even this might be rigged).