1971-HKRS30-16-30_Part07 — Page 7

26

(b) Analogue computers designed or modifled for use in air- borne vehicles, missites or space vehicles and rated for continuous operation at temperatores from below -45°C. to above +55°C; and equipment or systems incorporating such computers:

(c) Other analogue computers capable of accepting, processing and putting out data in the form of one or more con- tinuous variables and capable of incorporating a total of at least 20 summers, integrators, multipliers or function generators with facilities for readily varying the inter- connection of these components,

(d) Digital computers with one or more of the following

characteristics

(0) The Central Processing Unit (CPU) implements float- ing point operations by bardware;

() The sum of either the "1/0 bus rate" or the "total cffective bit transfer rate", whichever is less, and the "CPU bus rate" exceeds 10.8 million bits per second;

(i) The internal memory has a total connected capacity (excluding parily, word marker and flag bits) of morc than 0.6 million bits;

(iv) The computer is equipped with peripheral memory devices as follawe-

(1) More than 12:

(2) The "tolat effective bit transfer rate" (excluding data channels nol equipped with peripheral memory units) exceeds 0.7 million bits per second;

(3) Any magnetic tape transport with-

(A) More than 800 bits per Inch per track;

(B) More than 75 inches (191 cm.) per second tape

speed:

(C) More than 9 tracks per inch (127 mm.)

Tape width; or

(D) More than ☀ inch (12.7 mm) tape width: (4) For peripheral memory devices other than

magnetic tape transports-

(A) Total connected "net capacity" exceeds 3

million bila:

(B) "Total number of accesses" exceeds 120 per

second;

(v) Computers follows-

with cathode-ray tube displays DS

(1) Used to display alpha-numeric and similar data or information, excluding those displays for which circuitry and character-generation devices external to the tube limit displays to alpha-numeric char- acters in fixed formats or to graphs composed ouly of the same basic elements as used for alpha-numeric character composition (this exclusion is limited to graphic displays for which the sequence of symbols and basic elements of symbols are fixed by the format and character genctators

1568,

27

in the unit and cannot be generated arbitrarily by the computer);

(2) With light gun or other graphic input devices, excluding those which are parts of displays for which circuitry and character-generation devices external to the tube limit displays to alpha- numeric characters in fixed formats or to graphs composed only of the same basic elements as used for alpha-numeric character composition:

(e) Digital computers and digital differential analyzers (in- cremental computers) designed or modified for use in airborne vehicles, missiles or space vehicks and rated for continuous operation at temperatures from below -45°C. to above +55°C; and equipment or systems incorporating such computers or analyzers;

(f) Other digital computers operated by one or more common

control units and capable of all of the following-

() Accepting. storing, processing and producing an outpul in numerical or alphabetical form;

(ii) Staring more than $12 characters, whether numerical or alphabetical or both, or having an internal memory or more than 2048 bits;

(i) Performing a scored sequence of operations that are modifiable by means other than a physical change in circuitry; and

Ov) Selecting a sequence from a plurality of stored operations based upon data or an internally computed Tesult;

(g) Computers capable of operating in both analogue and

digital modes and related equipment as follows-

(0) Equipment whose analogue portion meets the con- ditions of sub-item (c) and whose digital portion meets tbc conditions of sub-item (7) and which also provides facilities for processing in the digital section numeric data from the analogue section or vice versa;

(H) Equipment for interconnecting the analogue and digital portions of computers as defined in sub-item {X});

(ii) Digital or analogue computers containing inter- connecting equipment as defined in sub-item (g)); (h) Specialized parts, components, peripherals, sub-assemblies. accessories, and spare parts for the above, including those which are described in items 1572 and 1588.

Equipment, as follows-

(a) All classes of devices, regardless of other characteristics, identified in sub-items (b), (c), (d), (e), 0), (g) and (0) below. which are designed to operate below -55°C or above +125°C;

(b) Synchros and resolvers (and special instruments rated to have the same characteristics as synchros and resolvers in (i) and (ii) below, such as Microsyns, Synchro-Tels and