Abstract: An indicator lamp has a structure that allows the indicator lamp to be reliably mounted on a printed-wiring board and permits soldering check to be performed easily. The indicator lamp has an electric light bulb and lead wires led out from the light bulb. The lead wires are soldered to respective patterns on a printed-wiring board. The leading end portions of the lead wires are looped.

Abstract: A subminiature lamp having a bulb with lead wires and a socket, the socket having a socket base and a bulb holder, connected to the socket base, for holding the bulb in a predetermined position, wherein a front surface and a back surface of the socket base form a substantially flat plate and are parallel with each other, the bulb holder is attached on the front surface of the socket base and the shape of the bulb holder is substantially a cylinder with a bottom corresponding to a portion of the front surface of the socket base, and a slit extends through the diameter of the bulb holder, and wherein the lead wires may be disposed along the front and back surfaces of the socket base and may extend through the slit of the bulb holder to contact the bulb in the bulb holder.

Abstract: Intercommunication of data between adjacent element processors (3) is performed through a memory unit (6) which is independently accessible to the respective element processors (3) without interfere with the operations of the other element processors (3). Thus, memory access and data transfer can be achieved without interfere with the operations of individual element processor (3). Furthermore, it becomes possible to solve differential equations by asynchronous communication system.