Design of a Digital Frequency Divider with Flexible and Adjustable Frequency Division Function
A technology of digital frequency divider and frequency division number, applied in counting chain pulse counter, pulse counter, pulse technology, etc. The effect of simple circuit structure
Inactive Publication Date: 2020-06-19
JILIN UNIV
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Problems solved by technology
Traditional frequency dividers use frequency simplification, integerization, and limited frequency bands. At the same time, it is impossible to set the preset number of multi-bit levels, and it is also impossible to obtain any frequency division coefficient on the premise of setting the preset number. At the frequency of the signal source, the frequency division coefficient can be obtained, but the effect of flexible frequency division cannot be achieved
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[0022] The following content will further illustrate the content of the invention and its principles in conjunction with the accompanying drawings. The examples given are used to explain the invention, not to limit the scope of application of the invention.
[0023] figure 1 It is a digital frequency divider circuit design structural block diagram with a flexible adjustable frequency division function of the present invention. It can be seen from the figure that the frequency divider is composed of three parts: frequency division and number setting unit, single-chip display unit, and mode selection unit. The functions completed by the three partial modules are as follows: the frequency division and number setting unit mainly completes the latching of various data and the output of the frequency division clock pulse coefficient; the single-chip display unit is mainly used for digital tube initial It is worth setting, if it is a decimal value, the setting range is 0~9, and the ...
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The invention provides a design of a digital frequency divider having the flexible and adjustable frequency division function. The technology belongs to the field of electronic computers. The designed digital frequency divider includes the following three parts: (1) a frequency division and number-setting unit which is the core part of the design, can realize the functions of random number setting and ary adjustment by means of the pulse counting and the combination of a single-chip microcomputer system and the electronic circuit technology, and can achieve the effect of flexible frequency division coefficients by any preset number; (2) a single-chip microcomputer display unit which displays the preset number on a nixie tube through the combination of an STC89C51 single-chip microcomputer minimum system and a four-bit nixie tube, and can further calculate the frequency division coefficients; and (3) a mode selection unit which designs a MODE mode, a SELECT mode, a ADD mode, and a SUB mode through the single-chip microcomputer minimum system and four buttons.
Description
technical field [0001] The invention is a digital frequency divider with the function of flexibly adjustable frequency division number by utilizing a single-chip microcomputer system. The invention belongs to the technical field of electronic computers. Background technique [0002] The frequency divider is one of the most important devices in modern communication engineering. Traditional frequency dividers use frequency simplification, integerization, and limited frequency bands. At the same time, it is impossible to set the preset number of multi-bit levels, and it is also impossible to obtain any frequency division coefficient on the premise of setting the preset number. At the frequency of the signal source, the frequency division coefficient is obtained, but the effect of flexible frequency division cannot be achieved. The main solution of this design is to obtain any frequency division coefficient under the premise of any preset number, and the value of the preset nu...
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IPC IPC(8): H03K23/66
CPCH03K23/665
Inventor 宋占伟曹宏宇黄琪
Owner JILIN UNIV