摘要:
An automated method for inserting dummy surfaces into the various layers of the physical design of a multilayer integrated circuit is implemented by an integrated circuit design system. The integrated circuit is organized in interconnected units containing interconnected blocks composed of interconnected cells. The multilayer integrated circuit design, stored in the design system is implemented layer by layer, through selective insertion of patterns of dummy surfaces. The selective insertion is based on an insertion hierarchy with respect to the hierarchy of the physical design of the integrated circuit, by means of individual implementation of the interconnected blocks and first interconnection routing for said interconnected blocks and individual implementation of the interconnected units and second interconnection routing for said interconnected units. The patterns of dummy surfaces are established selectively in accordance with the methods used for designing the blocks of the integrated circuit. The methods used for designing the interconnected blocks include a standard cell method and a custom cell method.
摘要:
The computing machine (1) comprises a RAM (3) and a mass memory (5) in which an operating system is stored. The mass memory (5) comprises a partition (8) that is read-only accessible to the operating system, said partition (8) containing a startup function, an automatic repair function, and a function for mounting said operating system.
摘要:
An endless tape for an impact printer is provided with separate groups of flexible fingers which project laterally from and along one side edge of the tape. The fingers of each groups are formed integrally with a common base and the base is removably attached in face-to-face relation to the tape. The ''''grain'''' of the material of the tape extends longitudinally of the tape in order most effectively to resist tape breakage due to the flexing of the tape as it is travelled along its endless path, whereas the grain of the material of the groups of fingers extends longitudinally of the fingers likewise to maximize their lives incidental to the flexing of these fingers caused by the striking hammers.
摘要:
A system for the selective storing of information of any duration, including associated temporary stores, is provided. The system comprises at least two identical elements for temporary storing, each of the elements comprising a memory for optical line-at-a-time reading, and a television camera, each camera being, on one hand, arranged in front of the display panel of the associated memory for line-at-a-time reading of the information stored in said memory and, on the other hand, electrically linked to the memory of another element for writing at least one information line into said memory.
摘要:
An electrical connection board containing a number of planes of conducting elements, with each pair of planes attached to the two faces of an insulating plate, arranged so that the conducting elements of one plane do not overlap those of other planes, with regularly spaced rows and columns of metallized connecting holes interposed therethrough. The conducting elements are capable of transmitting high-frequency pulses exhibiting steep edges without undesirable cross-talk phenomena resulting.
摘要:
A control system is provided for coded data transmission affiliated with a device for entering data into the central processor, wherein the device includes a data generator, an authorization circuit and a buffer store. According to the invention the said system includes a first circuit for controlling authorization, a second circuit for communicating with the central processor, a third circuit for error detection and for acceptance by the central processor of the entered data and means for synchronization.