JPH0313011A - Binary to decimal converter - Google Patents

Abstract

PURPOSE:To easily convert a large binary number to a decimal number by providing an output control counter to split an output of a conversion storage device with respect to a data converter. CONSTITUTION:In the case of a 32-bit binary number at a split output to an output line, since number of output lines of a conversion storage device 6 is 16, the data is outputted while being split into three divisions. An output control counter 10 controls the division of the output. Register files 2, 3 have the constitution of 16-bitX16, each 16-bit is accessed and able to subject to read/write. In the case of converting a 32-bit binary number, a decimal number in 10-digit is split by 4-digit (16-bit) each and stored in the register file 2. In this case, the data is converted into a decimal number while 4-bit each is processed for light times to obtain a partial sum and the decimal number is obtained by the total sum.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a data conversion device, and in particular, to a data conversion device that converts binary numbers to
This invention relates to a device for converting into 0-decimal numbers.

(Prior art) As a device for converting binary numbers into decimal numbers,
Conventional equipment performs conversion by dividing digits in bits, converting each digit along with its digit position information into a decimal number using fCtIL, using it as a partial sum, converting all the digits in one division, and calculating the sum. More present.

FIG. 2 is a circuit diagram of a conventional technique for converting a 16-bit binary number into a 5-decimal number.

A register file 1, a 2.4-bit register file latch 8, a counter 7, and a shifter 9 are connected to the internal path 1. Register files 1 and 2 are 16b
It has the configuration of itX16.

Read/write is possible by specifying addresses in 16-bit width. (Omitted in Figure 2) The 16-bit binary number in register file 2 is %1
It passes through the 0-ary adder 4, is shifted by the shifter 9, and is output to the internal bus 1. The data is then input to a 4-bit latch 8, the bit position of which is set by the counter 7, and the conversion storage device 6 converts it into a decimal number based on the position information.

The output of the conversion storage device 6 is selected by the selector 5.
O-adic adder 4 adds the partial sum of register file 3, and the result is added to register file 3 as a new partial sum.
is written to.

Since it is a 16-bit binary number, the conversion is completed in four times of 4 bits each (for example, Japanese Patent Application No. 57-52947).

(Problem to be Solved by the Invention) As mentioned above, in the conventional circuit, conversion is performed using a conversion circuit based on divided binary numbers and their digit position information. The number of cases will increase.

For example, a 32-bit binary number has the drawback of requiring as many as 40-bit output lines. In particular, 32 bit
Exceeding is undesirable for machine implementation.

Toe 9. The number of bits of the binary number that can be converted is determined by the output hit 6 of the conversion circuit.

An object of the present invention is to solve the above-mentioned drawbacks, and it is an object of the present invention to create a binary decimal system that can easily convert even binary numbers with a large number of bits into decimal numbers.
The purpose of this invention is to provide a system for converting decimal numbers.

(Means for Solving the Problems) In order to achieve the above object, the 21@decimal conversion device according to the present invention includes a first register file that stores binary numbers;
a second register file for temporarily storing a partial sum in the conversion stage; a selection means for selecting either a decimal number or a partial binary number in the first register file; and a partial binary number selected by the selection means. the latch part to latch.

a counter that indicates which part of the binary number the partial binary number latched in the latch section is; a conversion device that converts the selected partial binary number into a decimal number according to the position information of the counter; and the selection means. connected to a second register file, and when the selection means selects a partial binary number in the first register file, it passes through as is;

and a decimal adder for adding the decimal output to the partial sum of the second register file when the selection means selects the decimal output of the conversion device. In a binary-to-decimal conversion device that converts a binary number into a decimal number, an output control counter is provided to divide and output the output of the conversion device.
When converting and outputting a decimal number using a conversion device, the system is configured so that the decimal number is divided and output as a decimal number.

(Example) Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a binary-to-decimal conversion device according to the present invention. An output control counter 10 is added to the conventional circuit shown in FIG. yjlC2.

In the conventional technology, when converting into a decimal number in the conversion storage device 6, the range of convertible numbers is determined by the number of output lines. In other words, with 16 output lines, 9999 (□Q, 1
．． ), and for 20 lines, the maximum length is 99999 (10m). Conversely, in terms of binary numbers, 20 output lines are required to convert 16 bits, and 40 output lines are required to convert 32 bits.

In the present invention, divided output is performed on the output line, which is convenient for device implementation. For example, 32 bits
In the case of a binary number, the conversion storage device 6 has 16 output lines, so it is divided into three and output. The output control counter 10 controls the division of the output.

Register file 2.3 is 16 bits
It has 6 configurations, can address each 16 bits, and can read/write.

A case of converting a 32-bit binary number will be explained.

Divide the decimal number lO digits into 4 digits (16 bits) each.

Store in register file 2. In this case, 4 bits are divided into 8 times and converted into a decimal number to form a partial sum, and the decimal number is obtained by the summation.

When performing 4 bit conversion, the conversion result is 16 bit
The data is output three times sequentially starting from the lower digit by t, and is added to the partial sum in the register file 3.

In this way, with a 16-bit lO-adic adder.

A 32-bit binary number can be converted to a maximum of 10-digit decimal number.

(Effects of the Invention) As described above, the present invention has the effect that a large binary number can be easily converted into a decimal number by providing an output control counter for dividing the output of the conversion storage device.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a binary-to-decimal converter according to the present invention, and FIG. 2 is a block diagram of a conventional binary-to-decimal converter. l...Internal lotus 2.3...Register file 4
... Decimal adder 5 ... Selector 6 ... Conversion storage device 7 ... Counter 8 ... 4-pit latch section 9 ... Shifter 10 ... Output control counter

Claims (1)

[Claims] a first register file for storing binary numbers; a second register file for temporarily storing partial sums in the conversion stage;
a selection means for selecting either a 0-base number or a partial binary number in the first register file; and a latch section for latching the partial binary number selected by the selection means; A counter indicating which part of the binary number the base number is located in, and according to the position information of the counter,
a conversion device that converts the selected partial binary number into a decimal number;
connected to the selection means and a second register file, when the selection means selects a partial binary number in the first register file, it passes through as is, and the selection means selects the decimal output of the conversion device; a decimal adder that adds the decimal output to the partial sum of the second register file when The conversion device is characterized in that an output control counter is provided for dividing and outputting the output of the conversion device, and when the divided binary number is converted and output by the conversion device, it is configured to divide and output the decimal number. Binary to decimal conversion device.