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what are program invisible registers global and local descriptor tables are found in memory system in order to specify and access the address of
what is edo rama minor modification to the structure of the dram changes the device into an edo extended data output dram device in edo memory any
write about tsrtpa also holds tsr terminate and stay resident programs which remain in memory in an active state until activated by a hot-key
define emsthe area at location c8000h-dfffffh is often free oropen this area is used for the expanded memory system in a xt or pc system or for the
what is xmsmemory system is divided into 3 main parts tpa transient program area system area and xms extended memory system type of microprocessor in
state about agpthe latest addition to many computer systems is the inclusion of accelerated graphics port agp agp operates at the bus clock frequency
what is usbusb universal serial bus is intended to connect peripheral devices like mouse keyboards modems and sound cards to microprocessor through a
comparison between motorola processors and intel processors intelamd processors are really about the same thing they run the same software and
super scalar architecture pentium microprocessor is organized with three execution units one executes floating-point instructions and other two
state the protected mode interrupt in protected mode interrupts have exactly same assignments just like in real mode though the interrupt vector
describe real and protected modeoperation of real mode interrupt when microprocessor completes executing the current instruction it concludes
assembler directives an assembler directive is a statement to give direction to the assembler to perform the task of assembly process assembler
real time clock a real-time clock keeps the time in real time - ie in hours and minutes software for the real-time clock comprises an interrupt
what is the prominence of rs232-c in serial communication name some application where you see its use rs-232 stands for recommend standard
determine the synchronization of bitsthe synchronization provided by use of start and stop bits an extra bit known as a parity bit may optionally be
define baud rate the rate of data transfer in serial data communication is signified in bps bits per second bps is the rate of transfer of
define the half duplex transmission a half-duplex channel can receive andsend but not at the same time its like a one-lane bridge where two-way
explain the daadaa instruction follows the adc or add instruction to adjust the result into a bcd result daa instruction functions only with the al
what is cmp instructioncomparison instruction cmp is a subtraction that changes only the flag bits destination operand never changes a comparison is
what is neg instruction arithmetic sign inversion or twos complement neg neg instruction twos complements a number which means that arithmetic sign
explain the test instruction test instruction performs the and operation the difference is that and instruction changes the destination operand
what are the blocks of microprocessor based system 1 the memory and io system2 the dos operating system3 the
microprocessor development systemcomputer systems have undergone many changes recently machines that once filled large areas have been reduced to
what is assemblera macro-assembler or assembler normally forms a part of operating system that translates an assembly language program into machine
explain the paging unitpaging mechanism functions with 4k - byte memory pages or with a new extension available to pentium with 4m byte-memory pages