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highly encoded micro-instructions encoded bits required in micro-instructions are small it provided an aggregated view that is a higher view of cpu
unencoded micro-instructions one bit is required for each control signal so number of bits needed in a micro-instruction is high it represents a
q characteristics of extreme unencoded micro-instructions1 two sources can be attached by respective control signals to a single destination though
the micro-instruction cycle can comprises two basic cycles the fetch and execute here in the fetch cycle address of micro-instruction is produced and
q explain types of micro-instructionsin general micro-instruction can be classifiedin two general kinds these are non-branching and branching after
q instruction of a micro-programa micro-instruction is an instruction of a micro-program it specifies one or more than one micro-operations that can
micro-instructions are stored in control memory address register for control memory comprises the address of subsequent instruction which is to be
q explain about interrupt cycleon completion of execute cycle the current instruction execution gets completed at this point a test is made to
q illustrate the execute cyclethe fetch and indirect cycles include a small fixed sequence of micro-operations every one of these cycles has fixed
q explain indirect cycle in control unitonce an instruction is fetched the subsequent step is to fetch the operands the instruction may have indirect
q explain the fetch cyclethe beginning of every instruction cycle is the fetch cycle and causes an instruction tobe fetched from memory the
q how are control signals achieve the particular operationthe control signals are applied directly as binary inputs to the logic gates of the logic
control signals from control bus a number of the control signals are provided to control unit by the control bus these signals are issued from
q explain about instruction register and flagsthe instruction register it comprises the operation code opcode and addressing mode bits of the
q what is master clock signal in control unitthe master clock signal this signal causes micro-operations to be executed in a square in a single clock
q make an instruction execution feasiblewhat are the functions that a control unit performs to make an instruction execution feasible instruction
q explain micro-operations performed by cputhe micro-operations performed by cpu can be categorized as micro-operations for data transfer
q functional requirements of a control unitlets first try to define functions that a control unit should perform in order to get things to happen
q fundamental components of a cputhe two fundamental components of a cpu are control unit and arithmetic and logic unit the control unit of cpu
q how can this arithmetic processor be associated to the cpu two mechanisms are used for connecting arithmetic processor to cpu if an
q what is an arithmetic processora distinctive cpu necessitates most of the control and data processing hardware for implementing non-arithmetic
define random scanraster scan displays random scan is a method in which the display is made by the electronic beam which is directed only to the
what is meant by refreshing of the screen some method is required for maintaining the picture on the screen refreshing of screen is completed by
what is meant by scan code when a key is pressed on the keyboard the keyboard controller places a code take to the key pressed into a part of the
define is a personalityin order to allow programs coming other operating system to be run in linux linux supports the idea of personalities every