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What are some inputs and outputs for a cell phone?
Input touchscreen Memory card Output touchscreen Ear piece
How does a memory decoder 74Ls138 function?
The 74LS138 is a 3-to-8 line decoder that takes 3 input binary signals and activates one of eight output lines based on those inputs. It features three select inputs (A0, A1, A2) that determine which output (Y0 to Y7) will be low (active), while all other outputs remain high (inactive). The decoder also has enable inputs to control its operation; if the enables are not activated, none of the outputs will be activated. This device is commonly used in memory address decoding and data routing applications.
Why memory capacity of 8085 mp is 64 KB?
The memory capacity of the 8085 microprocessor is 64 kb because the address bus is 16 bits, and you can address 216, or 64kb, with a 16 bit address bus.
Block diagram of ic-7489 as 16x4 ram?
Use the link below to go to the data sheet for the IC. On page 5-4 you will see the logic diagram. Using it you can see that A0 - A3 are the address lines used to select the memory location to read from or write to. There are 16 locations. These work in conjunction with the 4 input AND IC's 1-16. These are the decoder section to decode the address and select the memory row. Pin 2 is the Memory Enable pin. This pin enables the memory when it is held low. At the bottom of the page you see the 4 data inputs D1-D4. These are used to input data into memory when the Write Enable Pin (Pin 3) is held low. When the Write enable pin is held high, the data stored at the memory location selected by the address lines will be placed on the outputs. However, the outputs are complemented. So if the data at the selected address is 1001, the output will be 0110. Thus to see the actual data, you would need an inverter on the outputs. So you basically have the address decoder, the memory cells, and the I/O control if you want it in blocks.
Is a gigabyte an input or output?
A gigabyte (GB) is a unit of digital information storage, not an input or output itself. It measures the amount of data that can be stored or transferred, such as in a hard drive, memory card, or file size. Inputs and outputs refer to data being sent to or received from a system, while a gigabyte quantifies the capacity of that data.
What is the max memory capacity of 8086?
The maximum memory capacity of the 8086 microprocessor is 1 megabyte (MB). This limitation arises from its 20-bit address bus, which allows it to address up to 2^20 memory locations, equating to 1,048,576 bytes or 1 MB. The memory is organized into segments, with the segmentation scheme allowing for more efficient memory management within this address space.
How many bits are there in data and address inputs of memory?
The number of bits in data and address inputs of memory varies depending on the architecture of the system. Commonly, modern systems use 32-bit or 64-bit architectures, meaning they can handle 32 or 64 bits of data at a time, respectively. The address input, which determines how much memory can be directly accessed, is often the same as the data bus width; for instance, a 64-bit architecture typically has a 64-bit address bus, allowing access to a larger memory space.
What is the Function of the CPU in plc?
1_ Updating the inputs and outputs. 2_ Perform logic and arithmetic operations. 3_ Communication with the memory. 4_ Scanning application programs. 5_ Communicating with a programming terminal.
Is a random access memory a input or output device or both?
Random Access Memory (RAM) is the volatile memory that is both an input and an output. You input data into the memory and can output the result on the monitor or print it out on paper, etc.
What would be the hexadecimal representation of the largest memory address in a memory consisting of 4MB if each cell had a one-byte capacity?
If the architecture allows each individual byte to be adressed then there are 4,000,000 possible addresses ranging from 0 to 3,999,999. So the largest address is 3,999,999 which is 3D08FF in hexadecimal representation
What is the bit capacity of a memory that has 1024 addresses and can store 8 bits at each address?
1024 bytes is 8192 bits.
What is the external data memory capacity of 8051 and why?
65536 bytes, because the 8051 family has a 16 bit external address buss.
