Exchange the speed of adjusting to design
systematically with the electrical machinery that
the one-chip computer controls
ABSTRACT
Frequency conversion that one-chip computer control transfer speed systematic design
philosophy with transfer to difference frequency control. Achieve the goal of controlling
rotational speed through changing the procedure . Because the motor is not big in power in
the design, the rectifier can not adopt controlledly the circuit, the condenser strains waves;
Going against the becoming device adopts three phases of the electric transistor to go against
the becoming device. The systematic ensemble architecture is by the main return circuit
mainly, drive the circuit, the photo electricity isolates the circuit, HEF4752 large scale
integrated circuit, protects the circuit, the Intel series one-chip computer, Intel8253 timing
/count device of,Intel8255 programmable interface chip,Intel8279 keyboard not in common
use / display, I/O interface chip, CD4527 proportion frequency division device and tests the
speed such composition as the generator ,etc.. Have the dependability that can make the
whole system operate of measuring and protecting the circuit to have guarantee in the return
circuit.Unconventional CMOS could revolutionalize memory technology. Up to now, we
have relied on DRAMs for main memory. Unfortunately, these are only increasing in speed
marginally as shrinkage continues, whereas processor chips and their associated cache
memory continue to double in speed every two years. The result is a growing gap in speed
between the processor and the main memory. This is the memory gap and is a current source
of anxiety. A breakthrough in memory technology, possibly using some form of
unconventional CMOS, could lead to a major advance in overall performance on problems
with large memory requirements, that is, problems which fail to fit into the cache.
Keys words:MCS-51；HEF4752；time/counter of l8253；selenium；rectifier
