Final answer:
The 8051 microcontroller indeed permits access to individual bits in specific SFRs, and the question seems to contain a typo. Without the provided code, it's impossible to determine the final value of register R1.
Step-by-step explanation:
The statement '8051 microcontroller allows a single bit access in some bit locations in R.A.' is true. In the 8051 microcontroller, certain SFR (Special Function Registers) allow for single-bit access. This includes registers like P0, P1, P2, P3, IE, IP, TCON, SCON, which all have individual bits that can be accessed directly, making operations more efficient. The R.A mentioned is likely a typo and should read as SFR, as R.A doesn't correspond to a known register or bit addressable area in the microcontroller architecture.
To determine the final value in R1 after the execution of the given code, one would need to see the specific instructions within the code. Since the actual 8051 assembly code is not provided in this scenario, it would not be possible to supply a factual answer regarding R1's final value without speculation.
It is important to correct any typos and ensure accurate terminology when working with microcontroller programming to avoid confusion and potential errors in programming and operation. Understanding how to manipulate individual bits and registers within a microcontroller is a crucial skill in embedded systems programming.