Recently, MCS (Single Chip Micyoco) is widely used in real-time control, automatism testing, computer terminal, remote communication, home appliances by strong function, small bulk, used convenient and high capability-price ratio.
It is a intellectual teacher's calling the roll device system based on ISD4004 to originally design , use when being suitable for the teaching of multimedia, to when the students of the whole class call the roll , can adopt two ways of calling the roll automatically siquentially and calling the roll at random . System this under one-chip computer control of AT89S51 , can realize , input through ISD4004 pronunciation chip to student name first, and then can broadcast the content included in the chip of the pronunciation in out automatically siquentially , can or following name of student any broadcast out present position fast too certainly, two number in charge of , have , can demonstrate some student of student numbers at the same time. Teacher call the roll through electron this function can go on the attendance to students in a short period of time, have lighten the teacher's work load, has shortened the time that teacher's attendance uses.
