GB1090761A - Creation of Inventions and Patents with Artificial Intelligence

GB1090761A – Calculator
– Google Patents

GB1090761A – Calculator
– Google Patents
Calculator

Info

Publication number
GB1090761A

GB1090761A
GB4341764A
GB4341764A
GB1090761A
GB 1090761 A
GB1090761 A
GB 1090761A
GB 4341764 A
GB4341764 A
GB 4341764A
GB 4341764 A
GB4341764 A
GB 4341764A
GB 1090761 A
GB1090761 A
GB 1090761A
Authority
GB
United Kingdom
Prior art keywords
register
registers
ent
track
digit
Prior art date
1963-10-28
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB4341764A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Friden Inc

Original Assignee
Friden Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1963-10-28
Filing date
1964-10-23
Publication date
1967-11-15

1964-10-23
Application filed by Friden Inc
filed
Critical
Friden Inc

1967-11-15
Publication of GB1090761A
publication
Critical
patent/GB1090761A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

G—PHYSICS

G06—COMPUTING; CALCULATING OR COUNTING

G06F—ELECTRIC DIGITAL DATA PROCESSING

G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled

G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation

G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices

G06F7/491—Computations with decimal numbers radix 12 or 20.

G06F7/498—Computations with decimal numbers radix 12 or 20. using counter-type accumulators

G06F7/4983—Multiplying; Dividing

G06F7/4985—Multiplying; Dividing by successive additions or subtractions

G—PHYSICS

G06—COMPUTING; CALCULATING OR COUNTING

G06F—ELECTRIC DIGITAL DATA PROCESSING

G06F15/00—Digital computers in general; Data processing equipment in general

G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators

G—PHYSICS

G06—COMPUTING; CALCULATING OR COUNTING

G06F—ELECTRIC DIGITAL DATA PROCESSING

G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements

G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer

G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials

Abstract

1,090,761. Keyboard calculators. FRIDEN Inc. Oct. 23, 1964 [Oct. 28, 1963], No. 43417/64. Heading G4A. An electronic keyboard operated calculator comprises a magnetic drum 1 (Fig. 1) having five tracks, three (Fig. 2) for producing timing pulses, a fourth (Fig. 6) for storing in pulse count notation form four interlaced 25-digit numbers and a fifth (Fig. 6) for storing temporarily the multiplier and quotient in multiplications and divisions, said calculator enabling shifts within registers, transfers between the four number registers and the four rules of arithmetic to be performed on the contents of these registers by means of a single read head 4 two write heads 2 and 3, a single up counter 9 and a single down counter 16. The storage arrangement in track 4 is such that the number of 1 bits in each digit position is one greater than the corresponding decimal digits of the stored numbers. Fig. 6 shows the interlaced arrangement of the track 4 registers whereby digits of the same order of significance are stored adjacent each other. The four registers are referred to as T1 (temporary store 1), T2 (temporary store 2), ACC (Accumulator register) and ENT (Entry register). A ” dead time ” is provided between the start position H 2 and end position H 1 of the drum. The single read head and two write heads are each spaced apart by three digit positions. Addition of two adjacent registers is obtained by reading into up counter 9 for each order of significance the bits of the first register followed by the bits of the next register with no intermediate clearing. The result -order-by-orderis then transferred to down counter 16 and written back on to the drum in the position previously occupied by the first register. For subtraction, down counter 16 is used to obtain the complement of the minuend. Provision is made for carrying and borrowing. Multiplication and division are similarly obtained by successive additions or subtractions under the control of the program signal generator. Shifting of the contents of a register to left or to right and transfers between registers is obtained simply by reading the digits of the selected register into up counter 9, transferring to down counter 16 and rewriting at the required new positions. These operations are described at length in the Specification with reference to Figs. 8-31 (not shown). Numbers are entered into ENT register by successive depressions of the required digit keys of a digit signal generator (illustrated diagrammatically in Fig. 8, not shown), said generator being coupled to the up counter 9. The contents of ENT register may be transferred to ACC register by depression of the FFA key of a function signal generator (illustrated diagrammatically in Fig. 10, not shown). Keys marked T1 and T2 (in Fig. 10) are provided for temporarily storing the contents of the ACC register in register T1 or T2 respectively, recall from these registers to ENT register being by means of keys marked R 1 and R 2 . Keys for the four rules of arithmetic (the operands being the numbers stored in registers ACC and ENT), shifting of ENT register to left and right and a clear key are provided (Fig. 10, not shown). The timing track outputs are shown in Fig. 2 wherein track 1 produces the start and end signals H 2 and H 1 , track 2 (R) signals define the start and end of each digit time slot and track 3 signals define the bit times (1200 between H 2 and H 1 ). The contents of the registers may be displayed, for example on a cathode ray tube.

GB4341764A
1963-10-28
1964-10-23
Calculator

Expired

GB1090761A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US31927363A

1963-10-28
1963-10-28

Publications (1)

Publication Number
Publication Date

GB1090761A
true

GB1090761A
(en)

1967-11-15

Family
ID=23241563
Family Applications (2)

Application Number
Title
Priority Date
Filing Date

GB1567567A
Expired

GB1090764A
(en)

1963-10-28
1964-10-23
Electronic calculator

GB4341764A
Expired

GB1090761A
(en)

1963-10-28
1964-10-23
Calculator

Family Applications Before (1)

Application Number
Title
Priority Date
Filing Date

GB1567567A
Expired

GB1090764A
(en)

1963-10-28
1964-10-23
Electronic calculator

Country Status (3)

Country
Link

DE
(1)

DE1474028A1
(en)

GB
(2)

GB1090764A
(en)

NL
(1)

NL6412334A
(en)

1964

1964-10-23
DE
DE19641474028
patent/DE1474028A1/en
active
Pending

1964-10-23
GB
GB1567567A
patent/GB1090764A/en
not_active
Expired

1964-10-23
NL
NL6412334A
patent/NL6412334A/xx
unknown

1964-10-23
GB
GB4341764A
patent/GB1090761A/en
not_active
Expired

Also Published As

Publication number
Publication date

GB1090764A
(en)

1967-11-15

DE1474028A1
(en)

1970-06-25

NL6412334A
(en)

1965-04-29

Contact information