Design And Construction Of Automatic Change-over For Three Phases

Fig 4.1 Vero Board
4.3    BREAD BOARD (or proto-board): - is usually a construction base for prototyping of electronics the term “Breadboard” is commonly used to refer to a solder less breadboard (plug board). A breadboard was originally was a flat wooding cutting board use to support to a loaf of bread (or other foods) while it was been shed; this original meaning is still in use but has a new additional meaning as “ a base for prototyping” the concept of “bread-boarding” as prototyping is not confined to be use by mechanical engineers. Because the solderless breadboard for electronics does not require soldering, it is  reusable this makes it easy to use for creating temporary prototypes and experimenting with circuit design. Older breadboard types did not have this property.  A strip-board (Vero-board) and similar prototyping printed circuit board, which are used to build semi-permanent soldered prototypes or one-offs, cannot easily be reused. A variety of electronic systems may be prototyped by using breadboard for small analog and digital circuit to complete central processing unit (CPUs)
In early days of radio, amateurs nailed bare copper wire or terminal strips to a wooden board (often literally a cutting board for bread) and soldered electronic component to them. Sometimes paper schematic diagram was first glued to the board as a guide to placing terminal then components and wires installed over their symbol on the bread board schematic. Using thumbtacks or small nails as mounting post was also common.
Breadboards have overtime, with the term now being used for all kind of prototype electronic devices for example.
Us patent 3,145,483, field in 1961 and granted in 1964; describe a wooden plate breadboard with mounted springs and other facilities. Us patent 3,496,419. The breadboard most pluggable (solderless) breadboard it was designed by Ronald Portugal of El. Instrument inc. in 1871.