FR2481504A1 - MECHANICAL STRUCTURE FOR A MODULAR-TYPE CORE MEMORY ASSEMBLY - Google Patents

Abstract

THE STACKING INCLUDES DECODING CIRCUITS 1, 3 FOR THE X AND Y WIRES, MADE ON AT LEAST TWO PLATES CONNECTED BY MEANS OF COUPLING ELEMENTS 7, AND A PLURALITY OF PLATES 2 WHICH CARRY THE MEMORY CORES AND WHICH ARE CONNECTED BETWEEN THEY AND THE DECODING CIRCUITS BY WELDING CONNECTIONS 8. THESE ELEMENTS ARE ASSEMBLED BY MEANS OF THREADED BARS 5 AND SPACERS 6. THE X AND Y CABLES CONNECTING THE DECODINGS TO THE CORRESPONDING DRIVING CIRCUITS AND THOSE S, Z WHICH MEET CORE MATRIX READ AND PROHIBITION WIRES EXIT FROM THE STACK ON THE SAME SIDE AT THE HEIGHT OF AT LEAST ONE OF THE DECODING PLATES WHILE INSIDE THE STACK THEY ARE ARRANGED ALONG OF THE EDGES, EXTERNAL TO THE SURFACE DELIMITED BY THE 6-THREAD SPACERS ON THE 5 BARS; THE CABLES S, Z GO DOWN TO MEMORY PLATES 2 TO THE HEIGHT OF CAVITES 10 PRACTICED IN THE PLATES; THE CABLES END IN LOCATIONS 9 LOCATED AT THE HEIGHT OF THE CELLARS 10.

Description

The present invention relates to a mechanical structure

  particularly suitable for accommodating all decoding circuits and ferrite core memories

which is indicated in the art as "stack".

  It should be remembered that by stacking is meant the whole

decoding plates and memories, i.e. the mechanical structure

that which contains it.

  Stacks are normally used in data processing systems such as working memories, data memories or program memories; these are in any case memories that can be extended modularly, at high

  density and whose access times are reduced.

A stack includes a memory of n words, each of which consists of k bits, organized in the form of a matrix: the coordinates X, Y of the matrix constitute the address of the word and the two corresponding wires cross all the k cores intended for memorizing word. The control circuits, outside the stack, have a lower number of outputs than the wires

  address: for this purpose the stacking includes circuits for

coding to which the wires leaving the associated commands end

  ciées to the control circuits and which are responsible for sending the current pulses produced by the same commands to the wire

address required.

Memory is also interested in inter-

  diction Z and reading S; we know several patterns of

spinning which provide, to reduce access times, the sub-

  division of the memory into partial memories, each of which has its own S reading and Z prohibition threads; often

each partial memory coincides with one of the places on the

  which, for reasons of congestion, the meroire is material-

lement carried out.

  From the exterior point of view, a stack consists of a set of plates, (some including the decorations

dages, others the ferrite cores) opportunely inter-

  connected either electrically or mechanically, to which lead the cables coming from the control circuits X, Y as well as the cables which join together the read S and prohibit Z wires. The aim of the present invention is to produce a

stacking which combines good mechanical resistance, access

  easy sibility to the plates which compose it and a distribution of the connection elements between the different plates and cables of connection with the outside which does not prevent

  natural ventilation of the plates themselves.

  The invention has the following characteristics - the mechanical assembly is carried out by means of threaded bars, placed near the tops and in the center of the plates, spacers threaded on the bars to maintain

separated the plates, and two cover elements

  ture placed at the ends of the assembly;

  - the printed circuit boards relating to each circuit

  decoding cooked on at least two plates are connected

tees by means of coupling connections, while the plates

  of memory are connected to each other and to the decoding circuits

  ge by solder connections placed along the edges of the plates themselves; - At the height of their peaks, the plates have cavities at the height of which we have obtained locations where the cables terminate; - the cables which connect a decoding to the corresponding control circuits exit from at least one plate carrying

decoding, are arranged along the edges of the plate ex-

  tières spacers and lead to said locations; - the read and prohibit wires of each plate are connected to the locations to which cables lead which, after having passed through the cavities, arrive on at least one decoding plate o, arranged along the edges of the plate at the outside of the spacers they come together to

form at least one outgoing cable.

  We will now better describe the invention with reference to

  this to a nonlimiting exemplary embodiment illustrated in the figures in which: - Figure 1 shows a side view of a stack according to the invention which has undergone a rotation.de 45;

  - Figure * 2 shows the cover element 4, met-

both in evidence the position of the mechanical fastening elements 5; - Figure 3 shows an exploded perspective view

of the stack in FIG. 1 able to highlight the dis-

tribution of cables coming from outside and some charac-

characteristics of the plates capable of facilitating this distribution.

The stacking indicated in FIG. 1 comprises the decoding 1 of the wires X, carried out on two plates, four memory plates 2, the decoding 3 of the wires Y also on two plates and two covering elements 4, which are better illustrated in Figure 2. Mechanical assembly is accomplished using five

threaded bars 5, arranged as in FIG. 2, and

tretoises 6 placed between the plates: as can be seen

quer in Figures 1 and 2, drawn to the same scale,

the bars 5 are relatively stocky compared to the dimensions

  - plate lesions, which gives the structure excellent resistance to mechanical stresses such as vibrations

and shocks.

  Each of the two decodings 1 and 3 is carried out on two

printed circuit boards connected together by con-

  couplings 7 (in figure 1, for further clar-

  (only a few have been indicated); the plates 2 which carry the matrices of cores constituting the memory are connected to each other and to the decodings by means of connections

  to be welded 8. Either the coupling connections 7 or the connections

  xions to be welded 8 are made along the edges of the plates.

  According to a preferred embodiment the connections.

  by coupling 7 and the connections to be welded 8 are distributed in the four sides of the plates: in particular the connections to be welded 8 occupy (as it also appears on figure 1 which represents a stack which underwent a rotation of 45 to be able to show two adjacent sides) a portion of the edge not more than half the length of the side of the plate and two adjacent connection groups 8 are offset between them, so as to improve the mechanical resistance to vibrations of

  all memory plates 2.

In another possible embodiment, the con-

  coupling couplings 7 are applied to the edges of the decoding plates 1 and 3 opposite those to which the external cables arrive (FIG. 3), while the connections to be welded 8 are located on the edge to which the external cables are connected;

according to another possible embodiment, namely the con-

xions by coupling 7, or the solder connections 8 are located, possibly in positions offset from each other, on the side of the plates opposite to that to which the external cables are connected. In figure 3 we have indicated how are distributed

inside the stack the cables coming from the ex-

  and how they end up at the different plates.

  In the figure, the cables which join

  feels the wires coming from the control circuits of the wires of a-

  draws up X, by Y the cables which join the wires coming from the control circuits of the wires of address Y, and by S, Z the cables which join together the read S and prohibit Z wires. As indicated in Figure 1, the memory is located on four plates 2, while the decodings 1 and 3, placed at the two ends of the stack, are both divided into two equal parts between them, each of which is located on a plate printed circuit board. to each part w of the decoding are connected the address wires of half of

Memory.

  The cables coming from the control circuits X, Y arrive at the half of the corresponding decoding plate, where they are divided into two parts which are located along the edges of the plate itself, surrounding the circuits present on the plate, to terminate at locations 9 present for this purpose and placed in a semicircle along the semicircular cavities

practiced on the plates at the height of their edges.

  The shape of the cables, the shape of the cavities 10 and the position of the locations 9 are clearly shown in FIG. 3, in particular with regard to the upper plate of the decoder X. In the embodiment shown in FIG. 3 ,

the. spinning scheme adopted for Z and S yarns in the

  ques de mémoire 2 provides that these plates are connected to the outside at four points and that the cables relating to two

  adjacent memory plates are brought together and out of the

pounding next to the cable of one of the decoding plates.

As is clearly seen in the upper part of the figure, the cable SZ enters the stack next to the cable X of the second decoding plate 1, is divided into two cables (each of which relates to a memory plate 2) which, in turn, branch off and, always remaining outside the surface occupied by the decoding circuits and delimited by the spacers 6, arrive at the cavities 10 where they divide

again: a cable enters the cavity 10 of the decoder plate

  ge and goes down to the memory plate where it ends up at the places

9, the other continues on its way along the edge of the decoding plate to the successive cavity where it descends to reach the other locations 9 of the core plate.

memory.

  In the figure we obviously omitted the connections by coupling 7 and the connection to be welded 8 as well as the circuits of

  decoding and matrices of ferrite cores.

In conclusion, the cables X, Y, S and Z are arranged along three sides of the decoding plates; the cables S, Z descend to the memory plates at the height of cavities 10 formed in the edges of the decoding plates 1 and 3 and of the

memory plates 2 so as not to obstruct the

natural ventilation of memory core plates 2; all the cables terminate at locations 9 located on the decoding plates 1 and 3 and on the memory plates 2 along the edges of the cavities 10; the connections by coupling 7 between the decoding plates and the plates C to be soldered 8 which unite the memory plates between them and with the plates of

decoding are carried out along the edges of the plates 1, 2 and 3.

The arrangement adopted for cables and connections allows for good natural ventilation of

stacking; at the same time the use of a mechanical structure

  than based on threaded bars 5, coupling connections

  7 and weldable connections 8 external and easily accessible

so facilitate the interventions which would be necessary to repair the breakdowns which could be verified in any

what point of stacking.

Claims (1)

CLAIM   Mechanical structure for a set of modular type core memories, comprising the address decoding circuits, produced on at least one printed circuit board, and a plurality of plates carrying the ferrite core memories, cables capable of connecting the decodings to the relative decoding circuits, and at least one cable which joins the read and prohibit wires leaving the memory plates, leaving said assembly, characterized by the fact that the mechanical assembly is carried out by means of bars stripes (5), placed near the peaks and in the center   said decoding (1 and 3) and memory (2) plates, trestles (6) threaded into said bars to maintain separate said plates (1, 2, 3) and two cover elements (4) placed at the ends of said memory assembly therebetween; the printed circuit boards relating to each detection circuit coding carried out on at least two plates are connected by means of coupling connections (7), while the memory plates (2) are connected to each other and to the decoding circuits by solder connections (8) placed along the edges said plates; said plates (1, 2, 3) have cavities (10) at the height of their apex, at the height of which locations (9) have been obtained to which the cables terminate; the cables (X, Y) which connect a decoding to the corresponding control circuits exit from at least one plate carrying the decoding, and are arranged along the edges of said plate outside   spacers (6) and lead to said locations (9).   The read (S) and prohibit (Z) wires of each memory plate (2) are connected to said locations (9) to which cables lead which, after having passed through said lives (10), arrive on at least one decoding plate o, arranged along the edges of said plate outside of said spacers, they meet to form at least one outgoing cable (SZ).