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What is ax or accumulator register?
Accumulator is a general purpose register.it is a 8 bit register in 8085. it stores the temporary results of a current operation doing by 8085.it is also called 'A' register
What is a 8085 microprocessor?
with neat diagram explain the system bus structure of 8085
What is DMA in 8085 in microprocessor?
DMA stands for Direct Memory Access, in regards to 8085 MP. It consists of 2 pins, namely, HOLD and HLDA. The former of which indicates the processor that either a peripherial or any IO device, is requesting the processor to hold its current activites and give the control of buses to IO devices. HLDA, on the contrary, is the acknowledgement from the microprocessor to the concerned IO device sending the request.
What is vss in 8085 pin digram?
Vss, also known as Gnd, is pin 20 on the 8085.
What is a curcuit called that has components in series plus components in parallel?
series-parallel curcuit
What is a parallel device?
There are several meanings of parallel device. It can mean having two or more computers working on the same problem at the same time. This is called parallel computing. Or it can mean any device hooked up to the parallel port on a computer. Parallel ports are fairly obsolete, so you are less likely to see this version of parallel device in the future.
Depends, is the device serial or parallel?
Depends, is the device serial or parallel?
What is a parallel slave port?
it is used to interface between controller and peripheral device.. peripheral device otherwise called external device such as LED,LCD...
Apart from input device Mouse is a serial device or parallel device?
serial device
Why the name 8085 is given?
The name 8085 was given to the next generation of the 8080 to indicate 1.) that it was a next generation device and 2.) that it only required a single +5V power supply to operate.
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.
Is the telegraph a serial or parallel device?
Serial
What is dma operation in 8085?
DMA->Direct Memory Access. I/O device can access the memory without the help of CPU. So that there is faster access by the device. I/O device signals microprocessor by HOLD signal.
Why is 8085 called so?
because 8085 is one of the landmark of 8-bit microprocessor history. it was more simple in construction than 8080. higher bit microprocessor can be understood very easily if one has prior knowledge of 8085.
Why the name 8085 Why the name 8085 for microprocessor?
8085 is a microprocessor designed by Intel
Basic DMA operation and 8237 DMA Controller?
In the 8085, DMA (Direct Memory Access) is controlled with HOLD and HLDA. The HOLD signal is a request to release the bus. The HLDA signal is the 8085's acknowledgement of that request. HLDA means that the 8085 will release the bus in one half clock cycle, i.e. at the end of T3. The 8085 will remain in that hold state until HOLD is released, at which point it will take control of the buses again. The HOLD'ing device has complete control and can access any memory or I/O. Often, the 8237 DMA controller is used to provide sequencing of the operation. The 8237 DMA controller interfaces between up to four peripheral devices and the 8085. It provides an address register for each device so that the device does not need to do so. The device only needs to indicate that a byte of data is available, or is required, and the 8237 will take care of storing or fetching the byte.
What device has the smallest current in parallel circuit?
In a parallel circuit, each branch has its own current flow, so there isn't a single device that has the smallest current. The current through each device is determined by its resistance and voltage applied. The device with the highest resistance will have the smallest current flowing through it in a parallel circuit.
