Abstract: A memory device comprises a plurality of banks of storage locations accessible in response to access requests. Data refresh means are provided for refreshing data stored in the storage locations within prescribed times, whereby the memory device autonomously perform a refresh. A cache memory is embedded in the memory device. The cache memory has a plurality of cache storage locations for storing data contained in recently accessed storage locations. Access control means control the access to the storage locations and to the cache storage locations in response to the access requests: an access request is diverted to the cache memory whenever access to anyone of the recently accessed storage locations is requested. Any cache storage location is freely associable to any storage location in any bank, the association between any cache storage location and a storage location in the plurality of banks being established by a storage location association table in the access control means.

Abstract: A memory device comprises a plurality of banks of storage locations accessible in response to access requests. Data refresh means are provided for refreshing data stored in the storage locations within prescribed times, whereby the memory device autonomously perform a refresh. A cache memory is embedded in the memory device. The cache memory has a plurality of cache storage locations for storing data contained in recently accessed storage locations. Access control means control the access to the storage locations and to the cache storage locations in response to the access requests: an access request is diverted to the cache memory whenever access to anyone of the recently accessed storage locations is requested. Any cache storage location is freely associable to any storage location in any bank, the association between any cache storage location and a storage location in the plurality of banks being established by a storage location association table in the access control means.

Abstract: A self-supporting swing structure made of a plastic material is disclosed. The swing includes two support shoulders (11), a horizontal crosspiece (12) for connecting the support shoulders in their upper part, and an oscillating seat (13) hung from suspension supports (14), which are fixed to the crosspiece. Each support shoulder (11) includes two tubular legs (15), which are fixed to one another at the top and to an end of the said crosspiece (12) by a locking bolt (16). The two legs turn downward and are joined at half height by at least one connecting crossbar (17). This connecting crossbar has its ends threaded in tubular joints (15') of the legs, and they are locked there by anti-unthreading tongues (17') and pins (20). In addition, the legs (15) of each shoulder (11) are rigidly connected (32, 114, 131) to an adjacent suspension support (14) of the oscillating seat.