Abstract: A system of technology teaching equipment including a support structure providing both horizontally and vertically disposed support areas with means for the removable attachment of components, the support areas including T-slots for the engagement of complementary parts of the components or of mounting brackets therefor, and/or for the engagement of the heads of respective fasteners.

Abstract: A mobile device to be connected to a home microcomputer is arranged to facilitate and encourage experimentation by the user. The device is largely made from construction kit ports, facilitating modifications and additions to its structure. Drive is provided by stepper motors, with one digital output pulse from the computer causing one increment of motor rotation. This simplifies programming by the user, especially if one pulse is arranged to cause a turn through an integer fraction of a right angle. The device carries a circuit board to which sensors on the device are connected by individual plugs and sockets, enabling one to be disconnected without disturbing the others. An interface board intermediately between the mobile device and the computer collates several cables from the computer parts into one cable leading to the mobile device.