This is how the Apple 1 computer was first hooked up.
That is a Zenith B/W TV modified for video that I used as a monitor. The Cassette tape player was a J C Penney model 681-6531, which I still have.
I was going to put the keyboard into its own case at first.
I build a power supply on the keyboard case, top, left and center. Now the keyboard was getting its power from here and not the Apple 1 computer.