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What is Difference between 8155 and 8255 microprocessor?
Neither the 8155 nor the 8255 are considered to be microprocessors. The 8155 is an integrated RAM, IO, and Timer device designed for the 8085. The 8255 is an Programmable IO controller.
Difference between arm processor and 8055 microprocessor?
8255
How can you increase the port of a microprocessor?
hi,dear u can increase the i/p, o/p number of ports by interfacing it with chip 8255,, that's the main idea, further how to interface it with the processor (preferably 8086),,,u must have a look of configuration and working of 8255,, for that you can chek this follow this linkhttp://www.scribd.com/doc/24040301/8255-Programmable-Peripheral-InterfaceRegards: Badeekh Akbar.
What is 8255 interfacing with 8085 microprocessor?
It means an 8 bit parallel I/O interface, as opposed to 8251 which is a serial I/O.
What are the function of 8255 8253 8251 8279 8259 8237 8212 chips in microprocessor?
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How do you generate control word using 8255 with 8085?
It has to be calculated, you can not generate the control word it's an hex value for controlling the ports of 8255A
How do you interface keyboard with 8086?
first connect the 8255 to the 8086 microprocessor and configure it using the CWR then connect the key board to the 8255
How many pin IC 8255 is?
40
How many pins are present in 8085 and 8086 microprocessor?
There are 256 ports available in the 8085 microprocessor. The IN and OUT instructions have an 8-bit port number, and that is where the 256 comes from.In order to use ports, the hardware addressing system must decode IO/M-. Some implementations don't do this, so they map IO addresses to memory addresses. In that case, you could say there are 65536 possible IO addresses, but that is not the same as ports, because ports are specific to the IN and OUT instructions.The other "problem" with IN and OUT is that you cannot specify the address in a register, while you can do so with indirect memory addressing.
What is the Definition of programmable peripheral interface?
It is an IC ie. 8255. it is used with in a combination with a microprocessor for the application of complex control algorithms. it is used coz of incapability of a micro-controller to achieve the same.....
What is the Difference between microprocessor and chip?
the IC that is organized as a single-chip microprocessor contains only CPU without the other peripherals like ROM, RAM, and I/O ports that comprise a microcomputer, while the single-chip microcomputer is the chip that contains all the components that give the capabilities of the microcomputer.
Is ther some inbuilt facility in 8051 microcontroller to interface it with other peripheral devices or peripheral interface like 8255 should be used along with it?
The 8051 can directly interface with a number of I/O. The 8255 just gives you the abilty to access 3 eight bit ports using a minimum number of control bits from the 8051
