Shell, crocodile is correct and you are already on a modern keyboard but where else would you find an alpha-numeric "keyboard" to 'write' stuff if you were, say, an old school office worker in a 'pool'?
Talk about hard work!. So, you are in the pub or club in the days before sports TV and it is very quiet. You get out your shilling and wander over to the machine with the carousel of 45s to select your favourite song and put your money in the freaking............