All-in-One Computers...
jraef,
Good fun alright. Look at those dual 5ÂĽ" diskette drives purr.
Harryting provided a Wikipedia link in Post #2, you may have missed it? If you look at the article you may notice that these machines were actually termed as an "all-in-one computer". If you link to that it describes the all-in-one form factor in a bit more detail...
All-in-one
An all-in-one desktop computer integrates the system's internal components into the same case as the display, eliminating some connecting cables and allowing for a smaller footprint, sometimes giving a degree of portability, compared to the standard desktop configuration of the separate display monitor and computer system case. However the all-in-one form factor still requires an external power supply and must be deployed on a table or desk to use the (still separate) keyboard and mouse, making them less mobile than a laptop which can rely on power supplied by a rechargeable battery and provides a built-in keyboard plus pointing device for its user.
The all-in-one form factor was popular during the early 1980s for computers intended for professional use such as the Kaypro II, Osborne 1, TRS-80 Model II and Compaq Portable. Many manufacturers of home computers like Commodore and Atari included the computer's motherboard into the same enclosure as the keyboard; these systems were most often connected to a television set for display. Apple has manufactured several popular examples of all-in-one computers, such as the original Macintosh of the mid-1980s and the iMac of the late 1990s and 2000s. By the early 2000s, many all-in-one designs were using flat panel displays, and by late 2012 some all-in-one models also included touchscreen displays to accommodate Windows 8.
Some all-in-one desktops such as the iMac G4 have used laptop components in order to reduce the size of the system case. Like laptops, some all-in-one desktop computers are characterized by an inability to customize or upgrade internal components, as the systems' cases do not provide easy access except through panels which only expose connectors for RAM or storage device upgrades. However, newer models of all-in-one computers have changed their approach to this issue. Many of the current manufacturers are using standard off-the-shelf components and are designing upgrade convenience into their products.
That last paragraph is noteworthy. I have been saying for years how laptop components are to dissimilar between manufacturers making them harder to upgrade with any real choice between COTS components.
G.