SU390524A1 - DEVICE FOR CALCULATION OF ELEMENTARY FUNCTIONS - Google Patents

Description

one

The device relates to the field of computing (to specialized computing devices).

A known device for calculating elementary functions, comprising a control node connected to a binary-decimal counter, the output of which is connected to an operation trigger, to a generator, output connected via corresponding keys with a binary-number counter and a waiting multiphase multivibrator, to the operation trigger, outputs which is connected to the keys, to the action trigger, the outputs associated with the generator and the input component coefficients, the output of which is connected via a key to a binary-tener counter, and the inputs to two A binary counter, a binary and an additional binary counter, is decided by an insufficiently wide class of problems.

The aim of the invention is to expand the functional capabilities of the device.

The goal of the invention is achieved by the fact that the device contains a binary building block, the first input of which is connected to the control node, and the second input is via a key, to the second input of which the output of the AND circuit is connected to the generator. The inputs of the circuit "And are connected to single and zero outputs, respectively, trigger operations and

2

trigger action. The outputs of the binary root counter are connected to the waiting multiphase multi-channel;

The device diagram is shown in the drawing.

The device consists of a binary-decimal counter /, a binary counter 2, an additional binary counter 3, a generator 4, an operation trigger 5, an action trigger 6, a coefficient input node 7, a control node 8 waiting for a multiphase multivibrator 9. a binary root counter 10, a key // to write the code in the decimal counting, keys 12 and 13 of the circuit "And 14, key 15 for passing the generator pulses to the counter root 10 N in the multivibrator 9 of the key 16, circuit" PE 17 for temporarily separating the inputs of the counter root 10 and the multivibrator 9 Communicating with others stvami accomplished lo schinam.

Tires of code X through switch 11, controlled by a pulse of writing code from control unit S, are connected to the inputs of the triggers of the binary-decimal counter /. The control node 8 is connected to the inputs to reset all the circuit triggers and to the enable input of the Generator 4. The generator also has a shutdown bus, connected to the action trigger output 6, clock bus, which is connected to the inputs of all counters and multiphase multivibrator and readiness bus connected to recording devices. The outputs of the trigger of operations 5 are connected to the control inputs of keys 12 and 13, the AND 14 circuit and to the counting input of the trigger action 6, to the input of whose setting 1 (the output of the overflow pulse of the decimal counter 1 is connected, and to the input of setting O is output binary counter overflow pulse 2. Output "On the trigger action 6 together with the output" 1 trigger operations 5 through the circuit "And 14 is connected to the control inputs of the keys 15 and 16. So, if there are signals on both outputs of the circuit" And 14, the resolution is supplied to the key 15, in the absence of one of the signals - on the key 16. Additional bits of the binary counter 3 and part of the triggers of the binary counter 2 have second counting inputs to which the outputs of the multi-phase multivibrator are connected. These outputs are controlled by the corresponding outputs of the binary counter triggers 10. The outputs of the trigger of the binary counter 2 are connected to the coefficient input node 7 It is grouped in it into a common bus - WALK in accordance with the value of the input coefficient. In this case, the sign of a single factor is the signal at the output of action trigger 1 1. The device starts with the start signal at the input of control node 8, and the control node performs several preparatory operations sequentially, namely: resetting the triggers circuit. The initial state, writing the code x through key 11 to the binary-decimal counter. / and switching on the generator 4. Resetting the triggers of binary counter 2 is performed so that by the time the generator 4 is turned on, the capacitor is free The binary counter 2 became equal to the capacity of the binary-ten counter 1. The extraction of the square root is performed in two actions. In the first action (trigger action 6 in the state “O”), the root value multiplied by a constant coefficient is obtained, and in the second action (action trigger 6 in the state “1”), this intermediate result is multiplied by the reciprocal this constant coefficient. After the end of each action, the intermediate or final result is r; binary-decimal counter. Each action is divided into two operations, Defined state of the trigger of operations 5. In the first operation (trigger of operations 5 in the state "O") there is always a number from the binary-decimal counter / is distilled into the binary counter 2. Thanks to the beginning The first operation of the capacity of the counters 1 2 is equalized, by the end of the first operation, determined by over-replenishing the counter /, in counter 2 there is an additional code of the original number that is in the counter /. In the second operation (trigger operations 5 in the state "1"), the free capacity of binary counter 2, rappa or proportional to the initial number, is filled with generator pulses until this counter overflows. In this case, the binary-decimal counter / is filled with generator pulses, the number of which is in the required dependence on the number of pulses at the input of binary counter 2. Thus, in the first operation, the number from counter 1 is rewritten into counter 2 with an additional code, and in the second operation the desired action is performed on this number, and the result is again returned to the counter /. After the generator 4 is turned off, the number x is distilled from the counter / into the counter by 2 pulses of the generator through the keys 12 and 16. The dual-decimal counter is overloaded by the first one, and its overflow pulse fails to trigger the trigger of the 5th circuit 5 to state "1. At the same time, the resolution “And 14” receives the resolution on the key 15, and the generator impulse passes to the input of the binary counter root 10, the circuit “NOT 17 to start the waiting multi-phase multivibrator P and to the input to the binary-decimal counter / via the switch 13. By generator impulse waiting multiphase multivibrator 9 generates sequentially at its outputs Pulses, which are specific in the presence of a resolution from a binary counter trigger of the root 10, pass to the counting inputs of binary and additional binary trigger 2 to 3. Therefore, with - each clock cycle for generators in counters .2 and 5 zapischets number, finding luminant binary counter 10. Thus root of time, waiting for a multiphase multivibrator 9 together with the binary counter 2 and the additional binary counter 3 operates as a kind of adder numbers. The code at the input of the standby multiphase multivibrator 9 binary counter root 10 constantly changes, increasing with each clock cycle by one, binary and double binary counters 2 and 3 with each clock of the generator successively record the numbers of the natural row 1, 2, 3,. . ., / (. rj. Second Operators ends with a pulse of overflow of these counters. At the same time, the trigger of operation 5 returns to the state "O and transfers the trigger of action 6 to the state of binary counter 2 is reset again to the number 24, and in the counter / is the number The free capacity of the counters 5 and .2 is equal to x-2, where the n is the number of triggers of the counter 3, is filled with the numbers of the natural number 1, 2, 3, ..., 1 (x), therefore -2 «: r -lf 2 + 3 ++ 1 (X).