Re: Tape?
"It is fascinating how even Clarke failed to foresee the advances in electronics and digital technology....The transistor had already been invented in 1947"
That's why it's called Science Fiction and not Future History. And even the best make mistakes :-)
I suppose it's possible he was aware of the results of an EMP and/or particle radiation on the new solid state electronics and that valves were more robust and the story was on the Moon....although it's unforgivable that he didn't foresee the recently invented transistor being scaled down such that 100's of 1000's on a tiny piece of silicon would supplant the chemical camera!