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Motorola 68HC11 series is a family of micro controllers , each device contains slightly different functional blocks , however they are all based around the same microprocessor namely the 6801 8-bit processor , therefore basic 6800/1 machine code will function on any of the devices in the range , what is different is the I/O features. The target system provided with these notes is the 'GBC11' which contains a 68HC11F1N4 device. This is a fairly advanced member of the HC11 range and has the following features
* MC68HC11 Cpu * 512 Bytes Electrically Erasable PROM with protection * 1024 Bytes of on board RAM * Enhanced 16 Bit timer * On board chip selects for expansion * Real time Interrupt circuit * 8 Bit Accumulator * Synchronous Serial Peripheral Interface * Asynchronous Serial communications Interface * Power saving Modes * 8 Channel 8 bit A/D converter * Watchdog and clock monitor
A device which converts BCD to Seven Segment is called ? Ans. DECODER is a device that converts BCD to Seven Segment. This coverts binary words in alphanumeric characters.
What is Instruction Cycle The simplest model of instruction processing can be of two steps. The CPU reads /fetches instructions (codes) from memory one at a time and executes i
State the Tips of timescale directive Include a `timescale directive at the top of each module, even if there are no delays i n the module, since some simulators may require th
Give the formula for the average access time experienced by the processor in a system with 2 levels of caches. Ans: Formula is for the average access time experienced by the pr
The analog signal needs to be sampled at a minimum sampling rate of: (A) 2fs (B) 1/(2fs) (C) fs/2
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Paging Unit Paging mechanism functions with 4K - byte memory pages or with a new extension available to Pentium with 4M byte-memory pages. In the Pentium, with the new 4M-byt
Q. Define the Refresh Rates and frame rate? A special circuit known as the Video Controller scans video memory one row at a time and reads data value at each address sending th
Question: a) Consider a car having a collision detection mechanism. Write an algorithm (in simple English) to illustrate the collision detection mechanism. b) The same car
find the minimum total number of shelves including the loading process
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