my posts would appear to have the characteristics of busses....

of punched cards...

i still have hundreds of them around the house and as Graham suggests, perfect for scribbling notes on the back

my first experience of these punched cards was when i worked as a computer programmer at the London Borough of Enfield, circa 1971.

At the time all data input was via paper tape which was prepared in the 'punch room' by the punch girls. Their age was around 20-25 and they were all very easy on the eye, especially for an 18 year old lad, as i was at the time.

In the corner of the punch room was an IBM card punch which was mainly used to prepare new computer programs. whenever a new program was needed i was always the first to volunteer to escape the computer room and spend a few hours punching cards. ;)