Abstract: The present invention facilitates increased output, decreased size, and simplified design and manufacture for a carburetor system in which a metering pin, which moves on a throttle valve, controls the fuel flow rate for a single fuel system. A carburetor of the present invention comprises a butterfly-like throttle valve on an air intake pathway with a nearly uniform diameter along its entire length, and a fuel nozzle positioned on the downstream side thereof. A metering pin retained by an actuating member that reciprocates linearly and remains in constant contact with a cam face of a cam member located on a valve stem. Fuel supplied to the air intake pathway from a constant fuel chamber via the fuel nozzle is controlled according to the opening and closing of a throttle. The metering pin by means of a cam controls the volume of the fuel flow rate at a desired stroke set irrespective of the opening and closing movement of the throttle valve.

Abstract: A cache memory device by which a processing speed can be elevated and which comprises a primary cache memory containing two primary ways of WAY0 and WAY1 each retaining a bit LRU0 and a bit LRU1 taking either a value 0 or 1 together with data and an address, a primary old way determining circuit for determining, on the basis of patterns of the bit LRU0 and the bit LRU1, which is an old way retaining data which has not been accessed for the longest period of time in the primary ways WAY0 and WAY1, and a primary cache control circuit inverting only the bits (the bit LRU0 or the bit LRU1) retained in the old way which has been accessed.