Bissoy.com
Doctors Medicines MCQs Q&A

Classic 8051, extended 8051 and 8051 MX have which of the following memories?

Classic 8051, extended 8051 and 8051 MX have which of the following memories? Correct Answer 64 kB external program ROM, 64 kB external data and 128 kB internal RAM

  • An 8051 microcontroller’s memory is divided into program memory and data memory.
  • Program memory (ROM) is used for permanent storage of a program to be executed, while Data memory (RAM) is used for temporarily storing and keeping intermediate results and variables.
  • It has 64kB external program memory and 4kB on-chip program memory, and 64kB of external data memory and 128 bytes of on-chip data memory.
  • Internal circuitry access the correct memory based on the nature of the operation in progress.
  • It can add memory externally if needed.

 

The Block Diagram of an 8051 microcontroller is as shown:

[ alt="F1 S.B Madhu 20.02.20 D2" src="//storage.googleapis.com/tb-img/production/20/02/F1_S.B_Madhu_20.02.20_D2.png" style="width: 419px; height: 286px;">

Related Questions

The following sentences form a paragraph.They are numbered as P, Q, R and S. These four parts are not given in their proper order. Read the sentences and choose the alternative that arranges them in correct order. P. Yes, we the bongs might go a bit overboard on food fetish talking about it effusively with a great deal of passion, but we all have our own food nostalgia memories, irrespective of where we belong to.  Q. The makke ki roti and sarson da saag, the daal baati choorma, litti chokha and puran polis of the world will continue to linger on our taste buds and fondly remind us of the best days of our life. R. The taste of Maa ke haath ka khana will always be missed, however gourmet meals we may have at Michelin-starred restaurants. S. Food nostalgia is all about reliving the experience of food and its associated memories and stories that all of us long to share. 
Based on the paragraph given below answer the following question: The traditional methods of combinational circuits involve simplification and realization using gates. Using these methods, complex functions have been integrated and are easily available in IC form. There is an attractive array of devices like a multiplexer, demultiplexer, decoders, comparators, parity generators/checkers, which significantly reduce IC package count there by reducing the system cost. The system design is greatly simplified because the laborious and time-consuming simplification methods are generally not required with these devices. This also improves the reliability of the system by reducing the number of external wired connections. But they have some limitations as well. Different memories like ROM, PROM can also be used to implement combinational circuits without much simplification.   Consider the following digital circuits. 1. Multiplexers 2. Read Only Memories 3. D-latch 4. Circuit as shown in figure below Which of these come under the class of combinational circuits?
Steps given are to draw an involute of a given triangle ABC. Arrange the steps. i. With C as centre and radius C1 draw arc cutting AC-extended at 2. ii. With A as center and radius A2 draw an arc cutting BA- extended at 3 completing involute. iii. B as centre with radius AB draw an arc cutting the BC- extended at 1. iv. Draw the given triangle with corners A, B, C.
Which of the following is/are wrong? a) RAM and ROM are volatile memories b) ROMs, PROMs and EPROMs are nonvolatile memories c) RAM and Dynamic RAM are same d) A random-access memory (RAM) is a read write memory
Flash Bulb memories are the memories of:
After GST and demonetisation, rising interest rates are set to hurt SMEs. Interest rates for loans against property (LAP) extended to small and medium sized enterprises (SMEs) are set to rise in the coming months of 2018 ‘ Rising interest rates, in addition to the muted operating environment for small businesses in India, will lead to an increase in delinquencies on LAP extended to SMEs’. The introduction of the goods and services tax (GST) in July 2017 and the government's demonetization policy have placed stress on the SME sector, which rising interest rates will exacerbate. Which of the following can be logically inferred from the statement above?
Read the passage carefully and select the best answer to each question out of the given four alternatives.
Public opinion may be passive and false or active and real. It is claimed in theory that all governments are ultimately based on the opinion or sanction of the governed. But we find that in practice the people's rights are often trodden down and tyranny and oppression are allowed to continue. The government does it not because the people want it to do so but because they are too idle, too uneducated and too disunited or timid to oppose the govern ment. Such public opinion is passive and false and not an active verdict. But when we find people alert, intelligent and determined to let the government know their will, when they want to exercise actively their voice in the management of their country, we have an instance of true or active public opinion. True public opinion is formed by and expressed through the press, the platform, political parties and educational institutions. These have sacred duties to perform, duties on which depends the ultimate good of the entire community. The press today wields a tremendous influence, So it should support the causes and move ments and condemn the wrong one's and thus teach people to form correct opinion. A free and fair press ventilates the grievances of the public. Thus a healthy relationship develops between the people and the government through out an unbiased press. Political parties also help to create and regulate opinions. No less important part is played by the educational Institutions which train the minds of the young people who will be the citizens of tomorrow. It has been said that modern Germany and China have been made by their universities. It is necessary that the young and the growing minds should imbibe the spirit of fellow-feeling, the spirit of tolerance, the habit of compromise, and show due regard for the feelings and opinion of others without which a democratic society cannot function, let alone succeed. When there is true awakening of the people, we shall have the real and conscious public opinion. And justice will reign on earth and truly will the voice of the people be the voice of God.
According to the passage, which of the following is needed from the people to have true or active public opinion? 1. Alertness
2. Determination
3. Intelligence
4. Raising their voice
The following is an extended activity given in the Class VIII NCERT textbook: Choose any five families of your neighborhood. Enquire whether their energy consumption (coal, gas, electricity, petrol, kerosene) has increased or decreased in the last five years. Enquire also about the measures they have adopted to conserve energy. What is the advantage of doing an extended activity like the above? The following are the responses of a few teachers. Identify the least appropriate response.
Read the passage carefully and select the best answer to each question out of the given four alternatives.
Public opinion may be passive and false or active and real. It is claimed in theory that all governments are ultimately based on the opinion or sanction of the governed. But we find that in practice the people's rights are often trodden down and tyranny and oppression are allowed to continue. The government does it not because the people want it to do so but because they are too idle, too uneducated and too disunited or timid to oppose the govern ment. Such public opinion is passive and false and not an active verdict. But when we find people alert, intelligent and determined to let the government know their will, when they want to exercise actively their voice in the management of their country, we have an instance of true or active public opinion. True public opinion is formed by and expressed through the press, the platform, political parties and educational institutions. These have sacred duties to perform, duties on which depends the ultimate good of the entire community. The press today wields a tremendous influence, So it should support the causes and move ments and condemn the wrong one's and thus teach people to form correct opinion. A free and fair press ventilates the grievances of the public. Thus a healthy relationship develops between the people and the government through out an unbiased press. Political parties also help to create and regulate opinions. No less important part is played by the educational Institutions which train the minds of the young people who will be the citizens of tomorrow. It has been said that modern Germany and China have been made by their universities. It is necessary that the young and the growing minds should imbibe the spirit of fellow-feeling, the spirit of tolerance, the habit of compromise, and show due regard for the feelings and opinion of others without which a democratic society cannot function, let alone succeed. When there is true awakening of the people, we shall have the real and conscious public opinion. And justice will reign on earth and truly will the voice of the people be the voice of God.
Which of the following is not the reason for the oppression caused to general public by the running government in the country?
Phase 8 of the Vande Bharat Mission has been extended until the 31st of December 2020. Under this extended phase, how many international flights have been scheduled to operate from 15 countries?