Intel 8085

You divide your frequency by 1 then divide that answer by the machine cycle. The 8051 uses 12.

So say your frequency is 30MHz you divide that by 1 which gives you 33.3n. then divide that by 12 which equals 2.77nS

dirictives is used for variable declaration it cannot execute at run time..

it does nor produce any code....

Well microprocessors are the most important thing in a computer which contains the following components:

1)ALU-arithmetic logic and control unit which is used for the arithmetic operations such as add,suband logical operations include logic AND,logic OR etc

2)Control unit-an important aspect of the microprocessors which generates signals for any operation to be performed by the microprocessor

3)Registers-used for the storage puposes including accumulator

Anand bhat(mca@kiit-870024)

The 8086 is not a co-processor. The 8087 is. The 8087 is intended to be coupled to an 8086/8088 to do math co-processing.

You need 12 address lines to access 4K of memory. 212 = 4096. log2 (4096) = 12.

16KB, or 16384 bytes, can be addressed with 14 address lines. (214 = 16384)

The advantages of the micro processor is that it small cheap to produce and is able to take over a lot of tasks that were time consuming to people.

advantages of micro processor is that these are general devices which can be programmes to execute a number of tasks.

The disadvantages are that this tends to make some.

the disadvantages are that the can crash and you can lose all your work.

by deva

Machine language is the actual instructions in computer memory that are fetched into the processor and executed. It is directly executable and consists of what look to most human beings like a bunch of hexadecimal numbers, though a few geeks such as myself can tell it is code instead of numbers. For example, the instructions executing interrupt 21, service 10, are:

B410

CD21

Assembly language is a human readable as mnemonics, it translates on a one for one basis into machine language. The computer cannot execute assembly language directly, but human beings who are trained can understand it. The assembly language equivalent of the above instructions is:

MOV AH,10 ; prepare for service 10 by putting 10 into AH

INT 21 ; vectors into code established in the interrupt table

2kb=2*1024=2048

2^11=2048

therefore 11 address lines are required

memory interfacing in 8085 microprocessor refers to provide a intermediate mode of transferring or receiving data from registers to main memory

The address bus is unidirectional becos address information is always given by microprocessor to i/o devices. The data bus is bidirectional bcos it takes the data from other devices & also give the data to other i/o devices

there are 74 instruction sets in the 8085 up which consist of 246 bit pattern.

32 bit address bus can access more than 4 gigabytes (232) of memory.

Sandeep Kr. Singh (MCA)

uh,,, a script?

The highest priority interrupt in the 8085 is the TRAP interrupt.

5

The READY signal of the 8085 microprocessor is sampled approximately one half clock after the trailing edge of ALE and, if not asserted, repeatedly one full clock cycle later until it is asserted.

An interrupt in the 8085, like in most computers, is a request to execute code out of sequence, usually by an external event, such as a signal from an IO device. In the 8085, an interrupt is almost exactly like a CALL instruction, except that the accumulator and flags register is also pushed on the stack. (Recall that the CALL instruction only pushes the return address on the stack.)This means that to return from an interrupt you must also pop the accumulator and flags, and this is done simply with the IRET instruction, as opposed to the RET instruction. In the 8085, the interrupt addresses are located in low memory, though the actual interrupt address could be anywhere if the interrupting device is capable of generating the three byte CALL sequence instead of the simpler INTx sequence, or the even simpler INTx.5 sequence.

To keep track of your money and make sure the bank isn't ripping you off.

ERROR im sorry but we will need more info to answer your question

This person does what they sound like they do. They register students.

The current "Intel Inside" slogan which was first launched in 1991, will be soon superseded by the new tagline "Intel. Leap ahead"

SHLD...it basically stands for "store HL pair with data"...

Explanation: HL pair is basically 2 registers H & L used together for specific purposes . This instruction stores the content of H & L registers into two consecutive memory locations (specified in the instruction). Better understand it with an example, SHLD 9000H means the processor will store the content of the "L" register in the location 9000H & that of the "H" register in the memory location 9001H.

ROHIT DAS

ECE

CALCUTTA INSTITUTE OF TECHNOLOGY.

(8287578929)

In electronics, telecommunications and computer networks, multiplexing (short muxing) is a term used to refer to a process where multiple analog message signals or digital data streams are combined into one signal over a shared medium. The aim is to share an expensive resource. For example, in electronics, multiplexing allows several analog signals to be processed by one analog-to-digital converter (ADC), and in telecommunications, several phone calls may be transferred using one wire. In communications, the multiplexed signal is transmitted over a communication channel, which may be a physical transmission medium. The multiplexing divides the capacity of the low-level communication channel into several higher-level logical channels, one for each message signal or data stream to be transferred. A reverse process, known as demultiplexing, can extract the original channels on the receiver side.

Multiplexing technique is designed to reduce the number of electrical connections or leads in the display matrix. Whereas driving signals are applied not to each pixel (picture element) individually but to a group of rows and columns at a time. Besides reducing the number of individually independent interconnections, multiplexing also simplifies the drive electronics, reduces the cost and provides direct interface with the microprocessors. There are limitations in multiplexing due to complex electro-optical response of the liquid crystal cell. However, fairly reasonable level of multiplexing can be achieved by properly choosing the multiplexing scheme, liquid crystal mixture and cell designing.

8 bit architecture means that the processor computes 8 bits at a time. these 8 hold instructional characterists for the processor to operate. higher bits ( we like to say wider) allow for a larger library of instructions are much more memory references.