Abstract
Frequency divider circuit is the basic circuit in digital logic circuit. The circuit function is to divide or drop the frequency of the high frequency signal to get the lower frequency signal for a given frequency signal by division. On the Multisim software platform, using different design methods, as the foundation of middle scale integration chip 74LS161, design even frequency divider, odd frequency divider circuit and (N- 0.5) frequency divider circuit respectively. Each circuit design principle and method is illustrated and simulated. The results showed that the design is correct and conform to the proposed requirement. Experimental teaching applications based on Multisim software can improve design efficiency and reduce development time of design systems.
Highlights
NI Multisim simulation software is a convenient and powerful Electronic circuit simulation platform, whose predecessor is EWB (Electronic Workbench) software. It has become a virtual simulation auxiliary platform for teaching and experiment of Electronic professional courses in college and university, and has been widely used in Circuit Analysis, Analog Circuit, Digital Circuit, High Frequency Circuit and other courses [1,2,3,4,5,6,7,8].The software is equipped with a good deal of database simulation models of original components provided by semiconductor manufacturers, and contains more than 20 kinds of virtual instrument tests, such as oscilloscope, multimeter and other common instruments in the laboratory, which provides abundant convenient conditions for efficient and accurate simulation
To let the students in learning digital circuit more deeply understand the concept of frequency divider and the corresponding theory knowledge, in this work, through the Multisim simulation software platform, using the 74LS series of small and medium scale integrated circuit chip design simulation of various types of frequency divider circuit, can broaden the students' design ideas, exercise the logical thinking ability, to improve the comprehensive design of digital system, and to lay a foundation for the course
In this work, based on the midscale 4-bit binary counter chip 74LS161, combined with other logic control circuits, on Multisim software platform, the design principle and structure of even frequency divider, odd frequency divider and decimal frequency divider are described in detail, and the design results are verified by oscilloscope simulation
Summary
NI Multisim simulation software is a convenient and powerful Electronic circuit simulation platform, whose predecessor is EWB (Electronic Workbench) software. To let the students in learning digital circuit more deeply understand the concept of frequency divider and the corresponding theory knowledge, in this work, through the Multisim simulation software platform, using the 74LS series of small and medium scale integrated circuit chip design simulation of various types of frequency divider circuit, can broaden the students' design ideas, exercise the logical thinking ability, to improve the comprehensive design of digital system, and to lay a foundation for the course. In this work, based on the midscale 4-bit binary counter chip 74LS161, combined with other logic control circuits, on Multisim software platform, the design principle and structure of even frequency divider, odd frequency divider and decimal frequency divider are described in detail, and the design results are verified by oscilloscope simulation
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