SU1591191A1 - Binary-to-binary-decimal four-digit code converter - Google Patents

Description

The invention relates to automation and computing and mono. It can be used in the construction of combinational parallel converters of binary to binary code. The purpose of the invention is to simplify the converter. This target is confirmed by the fact that the transducer contains the element OR 5, the elements AND 6-8, EXCLUSIVE OR 9-12, interconnected. 1 silt, 1 tab. '

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The invention relates to an automatic machine and computer technology and can be used to build parallel combinational converters of binary code to binary-decimal. '

The aim of the invention is to simplify the converter.

The drawing shows a functional diagram of the converter.

The circuit ’contains bit inputs. .1-4, element OR 5,. Elements AND 6-8, elements EXCLUSIVE OR 9-12, outputs 13-16 of the converter.

The operation of the converter is described by the following expressions:

Υ1 = 2 (Χ1, 4 A (X. V (X1, X2))) ;.

• Υ2 = 2 (Χ2, Χ4 A (XS ν (χΐ, χ2)) Α L (X1, XZ) A (X1, X4)) ;. (!)

Υ3 = 2 (Χ3 A (X3 V (X1, X2)) L (X1,

X4)); .

_L Υ4 = Μ2 (Χ4 A (X V V (X1, X2))),

'where ΥΙ (exit 13), Υ2 (exit 14),

Υ3 (exit 15), Υ4 (exit 16) are the digits of the output number in order of increasing significance of the digits;

X1 (input 1), X2 (input 2), HZ (output 3), · X4 (input '4) - values of the digits of the input number in order of increasing significance of the digits;

M2 is the addition function modulo two;

L. - the function of conjunction;

V is a disjunction function.

The specified expressions (.1) are derived from the table.

The converter works as follows.

Suppose you want to get the bits of the output number if the bits of the input frequency are given by the values: X1 = 0; X2 = 0; ХЗ = 0; X4 = 0.

Then on all inputs of the elements AND 6-8 the signal value is zero and on all inputs of the elements EXCLUSIVE OR 9-12 The values of the signals are also zero. Based on the condition Functioning of the element EXCLUSIVE OR at the outputs 13-16 of the first, second, third and fourth elements EXCLUSIVE OR the signal values are also equal to zero, i.e. ΥΊ = Ο, Υ2 = 0, 3 = 0, Υ4 = 0.

Direct substitution of input numbers on. other sets from 0001 to 1001 convinces that the required conversion specified by the table is performed. The proposed converter directly transmits the code from the inputs to the outputs, if the input number is less than or equal to the’4, and performs. add to the value of the input number 3 otherwise. Such a conversion algorithm allows the proposed converter to be used when creating parallel converters of binary to binary code.

Claims (1)

Formula of Invention Four-bit Converter binary code in binary-decimal, containing the first to the third elements AND and the first to the fourth elements EXCLUSIVE OR, the outputs of which are connected to the outputs of the corresponding bits of the converter, the inputs of the first and fourth digits of which are connected respectively to the first and second inputs of the first element EXCLUSIVE OR, the third input of which is connected to the output of the first element 'AND and the first inputs of the third and fourth elements is EXCLUSIVE OR, the output of the second element AND is connected to the first input of the second element EX ALTOR OR, the second input of which is connected to the input of the second digit of the converter, and the third input is connected to the output of the third element AND and the second input of the third element EXCLUSIVE OR, the input of the third digit of the converter is connected to the first input of the first element AND, characterized in that converter, it contains an OR element, the first and second inputs of which are respectively connected to the inputs of the first and second digits of the converter, and the output is connected to the second input of the first And element, the output of which is connected to By twisting the input of the second element EXCLUSIVE OR, the fifth input of which is connected to the input of the fourth digit of the converter, the second input of the fourth element EXCLUSIVE OR, and the first input of the third element AND, the second input of which is connected to the input of the first discharge of the converter connected to the input of the third discharge of the converter and the third input of the third element EXCLUSIVE OR. five 1591191 6 Bit values input number - - - - - - - - - - - - - - — — — —— - - - - - - output number X4 [xs [ h X1 Υ4 "I . Υ1 0 0 0 0 · 0 0 0 ' 0 0 0 0 one 0 0 0 one 0 about one 0 0 0 one 0 0 0 one one 0 0 one one 0 one 0 0 0 one 0 0 0 one 0 one ' one 0 0 0 0 one one 0 one 0 0 one 0 one one one one 0 one 0 one 0 0 0 one 0 one one one 0 0 one one one 0 0