tailieunhanh - Lecture Digital logic design - Lecture 15: Magnitude comparators and multiplexers

The following will be discussed in this chapter: Discussion of two digital building blocks, magnitude comparators, compare two multi-bit binary numbers, create a single bit comparator, use repetitive pattern, multiplexers, select one out of several bits, some inputs used for selection, also can be used to implement logic. | DLD Lecture 15 Magnitude Comparators and Multiplexers Give qualifications of instructors: DAP teaching computer architecture at Berkeley since 1977 Co-athor of textbook used in class Best known for being one of pioneers of RISC currently author of article on future of microprocessors in SciAm Sept 1995 RY took 152 as student, TAed 152,instructor in 152 undergrad and grad work at Berkeley joined NextGen to design fact 80x86 microprocessors one of architects of UltraSPARC fastest SPARC mper shipping this Fall Overview Discussion of two digital building blocks Magnitude comparators Compare two multi-bit binary numbers Create a single bit comparator Use repetitive pattern Multiplexers Select one out of several bits Some inputs used for selection Also can be used to implement logic credential: bring a computer die photo wafer : This can be an hidden slide. I just want to use this to do my own planning. I have rearranged Culler’s lecture slides slightly and add more slides. This covers everything he covers in his first lecture (and more) but may We will save the fun part, “ Levels of Organization,” at the end (so student can stay awake): I will show the internal stricture of the SS10/20. Notes to Patterson: You may want to edit the slides in your section or add extra slides to taylor your needs. Comparators Comparing two binary words is a common operation in computers. A circuit that compares 2 binary words and indicates whether they are equal is a comparator. Some comparators interpret their input as signed or unsigned numbers and also indicate an arithmetic relationship (greater or less than) between the words. These circuits are often called magnitude comparators. XOR and XNOR gates can be viewed as 1-bit comparators. Comparator is a combinational logic circuit that compares the magnitudes of two binary quantities to determine which one has the greater magnitude. In other word, a comparator determines the relationship of two binary quantities. A exclusive OR gate . | DLD Lecture 15 Magnitude Comparators and Multiplexers Give qualifications of instructors: DAP teaching computer architecture at Berkeley since 1977 Co-athor of textbook used in class Best known for being one of pioneers of RISC currently author of article on future of microprocessors in SciAm Sept 1995 RY took 152 as student, TAed 152,instructor in 152 undergrad and grad work at Berkeley joined NextGen to design fact 80x86 microprocessors one of architects of UltraSPARC fastest SPARC mper shipping this Fall Overview Discussion of two digital building blocks Magnitude comparators Compare two multi-bit binary numbers Create a single bit comparator Use repetitive pattern Multiplexers Select one out of several bits Some inputs used for selection Also can be used to implement logic credential: bring a computer die photo wafer : This can be an hidden slide. I just want to use this to do my own planning. I have rearranged Culler’s lecture slides slightly and add more slides. This covers .