Abstract: In a circuit arrangement for an integrated data processing system, which arrangement is composed of various function blocks formed on integrated circuit chips containing MOS components, the function blocks are distributed among the chips and all of the chips are provided with identical connection zones for permitting connection of a collecting bus. Preferably, all chips are fabricated to have substantially the same degree of circuit complexity.

Abstract: In a circuit arrangement composed of chips containing highly integrated MOS circuit components for a data processing device, the arrangement including a first chip containing a central arithmetic and control unit, a plurality of further chips each containing a memory, and a bus connecting the chips, each further chip is provided with its own address register for addressing the memory on that chip, and the register is capable of being set to contain any desired address word and to selectively count through a sequence of successive address words under control of counting pulses, each address word identifying a respective word location of the associated memory.

Abstract: In a circuit arrangement composed of a plurality of highly integrated MOS circuit chips, for use in a data processing device, one chip being an arithmetic and control unit and further chips containing memories, each further chip is also provided with an address register capable of storing a selected memory location address and an address selecting the memory of a selected memory chip for read-out and arranged to count through the successive memory location addresses and to change the memory selecting address after the count reaches the last memory location address, such counting being effected by counting pulses.

Abstract: A holding device for temporarily holding the free end of a typing or printing ribbon to permit it to be automatically wound around the core of a takeup reel in an automatic ribbon fastening system. The reel has one flange part provided with a threading slit whose width increases toward the outer edge of the flange part from an inwardly located ribbon-gripping portion. The holding device temporarily holds the free end stationary under slight tension so that the ribbon extends across the flange part. As the reel is rotated, the ribbon enters the threading slit and slides radially inwardly until it is gripped by the gripping portion. As the reel continues to rotate, the free end of the ribbon is pulled out of the holding device.