Issue No.12 - December (1976 vol.9)
The Open Channel is exactly what the name implies: a forum for the free exchange of technical ideas. Hold your contributions to one page maximum in the final magazine format (about 1000 words?less, if you want to include illustrations).
"The Open Channel", Computer, vol.9, no. 12, pp. 76-78, December 1976, doi:10.1109/C-M.1976.218477