Maximum size of ROM and the maximum size of user RAM (Internal as well as external) in 8051 is as follows:Select one:a. (64KB) ROM and (64KB + 128 Bytes + 128 bits) RAMb. (64KB ROM) and (64KB + 128 Bytes) RAMc. (64KB) ROM and (64KB + 256 Bytes) RAMd. (64KB) ROM and (64KB) RAM

The 8051 uses a Harvard architecture, which means it has separate code and data memory spaces.The code memory is usually 4 KB in size (for standard 8051 variants), allowing you to store the program code.Data Memory:The data memory is used to store data and variables used by the program.It is typically implemented using RAM (Random Access Memory).The data memory of the 8051 is divided into three parts:a. Internal RAM: The 8051 has 128 bytes of internal RAM, which is divided into four banks of 32 bytes each. It is accessible through direct addressing or as register banks (R0 to R7).b. Special Function Registers (SFRs): These are memory-mapped registers used for controlling and interfacing with various peripherals and internal hardware features of the 8051.c. Bit-Addressable RAM: Some bits within the internal RAM are bit-addressable, which allows you to manipulate individual bits as if they were separate variables.Bit Addressable Memory:In addition to the bit-addressable RAM mentioned above, the 8051 has bit-addressable SFRs (Special Function Registers).These registers are used for controlling various hardware features of the microcontroller, and you can set or clear individual bits within them.Stack Memory:The 8051 uses a stack to store return addresses during subroutine calls and to manage local variables.The stack is implemented in the internal RAM and grows from higher memory addresses to lower memory addresses.The stack pointer (SP) register is used to keep track of the current top of the stack.External Data Memory:Some 8051 variants support external data memory interfacing, allowing you to connect additional RAM or ROM to the microcontroller for data storage or program expansion.In summary, the 8051 microcontroller's memory structure consists of code memory for program instructions, data memory for variables and data storage, bit-addressable memory for individual bit manipulation, and stack memory for managing subroutine calls and local variables. Additionally, some variants support external data memory for further expansion of data storage or program space. Understanding the memory structure of the 8051 is essential for writing efficient and effective assembly programs for this microcontroller.RegenerateFree Research Preview. ChatGPT may produce inaccurate information about people, places, or facts. ChatGPT September 25 Version?ChatGPT

A total RAM size of 2048 is attached to a system with 128x8 RAM size, in this arrangement which of the following points will be true? ROM selection will be of 5 linesIf ROM of 512x9 is attached in this system, at least certain lines will be similarIf ROM and RAM are attached, RAM requires more data linesDecoder for RAM requires 2 inputs

In an 8085 system, CS = A15’ A14 A13 is used as the chip select of a 4K RAM. What is the memory range of the system? A) 3000-3FFFH B) 7000-7FFFH C) 5000-5FFFH and 6000-6FFFH D) 6000-6FFFH and 7000-7FFFH

8051 has four register banks becauseSelect one:a. It has limited size of bit addressable areab. It has limited size of SFRsc. It has limited size of stackd. It supports multiple pointers

You have been asked to implement 128K X 32 memory unit using 2K X 16. How many memory chips will be required to implement this configuration?Question 8Select one:a.64b.512c.128d.256