PHILIPS ODYSSEY 2001
The Wiki description is the following.
he Philips Odyssey 2001 is Philips' version of the Magnavox Odyssey 4000, with differences in the games offered and the use of detachable paddles instead of joysticks. released in 1977, the Philips Odyssey 2001 is based on the National Semiconductor MM-57105 chip, which plays Tennis, Hockey, and Squash, and allows full color and direct sound on the TV.
It is one of the early 'game' consoles. The one I have is still in working order. I connected it using the Philips receiver to my monitor. Very hard to play actually.
One of the more advanged handheld was the Sony PS2. It was however a bit to late. Perfect machine for that time, however around 2008 the iPhone came out and the handheld game consoles became less popular.
This was actually a Portable Playstation that was presented around 2003/2004.
This one still runs.
This one is a real classic game console. Many Many people owned one and played many hours on it. The screen was not that good and you needed a light of magnifing glass to see. I Playes Tetris for hours on that thing.
RADOTIN BLACK AND WHITE TV GAME
A disk notcher is a device that was used to convert a single-sided 5.25" floppy disk to a double-sided floppy disk by adding a write-enable notch to the disk. The addition of the notch allowed data to be written to the other side.