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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
How many 32K X 1 RAM chips are needed to provide a memory capacity 256 kilobytes?
Throughput of a system is? Ans. "Throughput" of a system is no. of programs processed by this per unit time.
Problem 1 Prove that :- x(x + y) = x by using identities 2 Write a short note on Analog to Digital Converter (ADC) 3 Differentiate between sequential and combinational ci
Common channel signalling ? Common channel signalling requires no additional transmission help or facilities.
If voice is converted to digital form using PCM, how many bits of data will be produced in half a second? While voice is converted to digital by using PCM that is Pulse Code Mo
Of the two "next screen "attributes the attributes that has more priority is?? Dynamic.
What is a Region? A Region is a continuous area of a process's address space (like text, data and stack). The kernel in a "Region Table" that is local to the process mainta
What is Hashing? Hashing: Hashing gives the direct access of record from the file no matter where the record is in the file. This is possible with the help of a hashing functio
Define user mode and Kernel mode Kernel is a private mode in that no limitation is imposed on the kernel of system. Kernel may be use all the information of the processor, oper
Define Mapping and List mapping procedure? The transformation of data from main memory to cache memory is known as an Mapping. Associative mapping Direct mapping
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