Bộ chuyển đổi tương tự – số ADC trên bo mạch lập trình Arduino UNO có độ phân giải 10-bit, điện áp tham chiếu VRF = 5 V. Giá trị ADC lớn nhất mà bộ chuyển đổi này đạt được là bao nhiêu?
Bộ chuyển đổi tương tự – số ADC trên bo mạch lập trình Arduino UNO có độ phân giải 10-bit, điện áp tham chiếu VRF = 5 V. Giá trị ADC lớn nhất mà bộ chuyển đổi này đạt được là bao nhiêu?
Câu hỏi liên quan
- Phát biểu nào sau đây là đúng?
Read the following passage about powering and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.
TikTok is a popular social media app where people can create and share short videos [I]. It started in China in 2016 as Douyin [II]. The app is known for its easy-to-use tools that let users add music, effects, and filters to their videos [III]. People of all ages enjoy making and watching TikTok videos, which can be funny, educational, or creative [IV].
One of the reasons TikTok is so popular is because of its algorithm, which shows users videos that match their interests. When you open the app, you see a personalized feed called the "For You" page. This page is different for everyone and updates with new videos all the time. Users can also follow their favorite creators to see more of their content.
TikTok has become a platform for trends and challenges. Many users participate in dance challenges, lip-syncing, and other viral activities. These trends can spread quickly, reaching millions of people in a short time. Because of this, TikTok has influenced music charts, fashion, and even language. Songs that go viral on TikTok often become hits on other platforms too.
The app is also a space for education and advocacy. Many creators use TikTok to share knowledge about various topics, such as science, history, cooking, and fitness. Others use the platform to raise awareness about social issues and promote positive change.
In addition to individual creators, many brands and businesses use TikTok for marketing. They create content to engage with their audience, often using popular trends and challenges to promote their products.
However, TikTok has faced some criticism and challenges. Concerns about privacy and data security have led to scrutiny from governments. Despite these issues, TikTok still remains one of the most downloaded apps in the world.
Which of the following best summarises the passage?
Chức năng nào thường được sử dụng để trình chiếu màn hình máy tính lên tivi thông minh qua Wi-Fi?
Read the following passage about and mark the letter A, B, C, D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.
Some people look at an equation and see a bunch of complicated numbers and symbols while others see beauty [I]. Now, thanks to a new tool created at Carnegie Mellon University, anyone can now translate the abstractions of mathematics into beautiful and instructive illustrations [II]. This exciting new tool is named Penrose after the mathematician Roger Penrose, who is famous for using diagrams and other drawings to communicate complicated mathematical ideas [III]. Penrose enables users to create diagrams simply by typing mathematical expressions and letting the software do the drawing [IV].
Unlike a graphing calculator, these aren’t restricted to basic functions, but can be complex relationships from any area of mathematics. “Some mathematicians have a talent for drawing beautiful diagrams by hand, but they vanish as soon as the chalkboard is erased,” said Keenan Crane, an assistant professor of computer science and robotics. “We want to make this expressive power available to anyone.”
Diagrams are often underused in mathematical communication, since producing high-quality illustrations is beyond the skill of many researchers and requires a great deal of time and effort. Penrose addresses these challenges by letting diagram-drawing experts turn their knowledge about creating diagrams into computer codes so that other users can access this capability using familiar mathematical language and a computer. “We started off by asking: ‘How do people translate mathematical ideas into pictures in their head?’” said Katherine Ye, a Ph.D. student in the Computer Science Department who is involved in the development of Penrose. “The secret sauce of our system is to empower people to easily ‘explain’ this translation process to the computer, so the computer can do all the hard work of actually making the picture.”
Once the computer learns how the user wants to see a mathematical object visualized – a vector represented by a little arrow, for instance, or a point represented as a dot – it uses these rules to draw several candidate diagrams. Users can then select and edit the diagrams they want from a gallery of possibilities. A special, simple-to-learn programming language was also developed so that they can easily convey the ideas in their minds to the Penrose system, Crane said. “Mathematicians can get very picky about notations,” he explained. “We let them define whatever notation they want, so they can express themselves naturally.”
The researchers will present Penrose at the SIGGRAPH 2020 Conference on Computer Graphics and Interactive Techniques, which will be held this July. “Our vision is to be able to dust off an old math textbook from the library, drop it into the computer and get a beautifully illustrated book - that way more people understand,” Crane said, noting that Penrose is a first step toward this goal.
(Adapted from sciencedaily.com)
The word ‘they’ in paragraph 4 refers to ______.
Nhận định nào sau đây không đúng với vận động nội lực theo phương thẳng đứng?
Trong thí nghiệm nhận biết và tách chiết diệp lục, vì sao ở ống nghiệm đối chứng (ống chứa nước cất) có màu xanh rất nhạt?
CHỦ ĐỀ: NGƯỜI Ở BẾN SÔNG CHÂU
(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 21)
https://tvsthpt.dlib.vn/app/doc-sach-ebook/d02db18272fe
Và trả lời câu hỏi sau:
Từ thông tin của bài đọc, hãy hoàn thành câu sau bằng cách kéo thả các từ vào đúng vị trí.
- Tâm trạng của dì Mây khi được trở về quê hương, gặp lại bố ở bến sông: (...a...)
- Tâm trạng của dì Mây khi nói chuyện với chú San: (...b...)
- Tâm trạng của dì Mây sau khi đỡ đẻ cho cô Thanh: (...c...)
Một chiếc thuyền đi xuôi dòng 1,6 km rồi quay đầu đi ngược dòng 1,2 km. Toàn bộ chuyến đi mất 45 phút. Tìm tốc độ trung bình của thuyền.
Read the following passage about Hallyu and mark the letter A, B, C, or D to indicate the option that best fits each of the following questions from 23 to 30.
Over the past few decades, the term ‘Hallyu’, which translates to “Korean Wave”, has made its way to the global stage. The rapid growth of the Hallyu market owes its success to meticulously crafted domestic cultural strategies and unwavering government support. Following the Asian financial crisis in 1997, President Kim Dae-jung envisioned a national cultural strategy to revive the economy. Since then, South Korea’s cultural industry has been on an upward tendency.
Amongst the latest ranking of most-subscribed-to YouTube accounts, BLACKPINK secures the global top spot of artists, followed by BTS in second place and Justin Bieber in third place. The exportation of cultural industries vividly showcases the escalating influence of Hallyu, now a trump card for South Korea in improving its soft power.
BLACKPINK’s recent presence at Buckingham Palace is not the first time South Korean idol groups have stepped onto the diplomatic stage. Thanks to the huge fan base and influence of these groups, they have become a common sight before foreign affairs visits and leader summits. Back in May 2022, BTS held an audience with US President Joe Biden at the White House, discussing matters concerning anti-Asian hate and racial discrimination.
According to the ‘2021 National Image Survey’ by the South Korean Ministry of Culture, Sports, and Tourism, a striking 80.5% of foreigners positively evaluated South Korea’s national image. Undoubtedly, the Hallyu wave molds South Korea’s national image on their political and cultural fronts.
(Adapted from https://uclpimedia.com)
In which paragraph is the impact of Hallyu on diplomatic relations discussed?
Cho tập hợp A = {x ∈ ℕ| 3 < 2x – 1 < m}.
Tìm giá trị của m để A là tập hợp rỗng?
Read the passage and do the tasks below. Decide whether the following statements are True (T), False (F) or Not Given (NG).
Most people relate stress to physical symptoms like an upset stomach or headaches. Research has suggested that negative emotions and thoughts may also have close links to our brain. Researchers have started finding out why we tend to remember negative things more strongly and, in more detail, than good ones. “The hrain handles positive and negative information in different parts. Negative emotions involve more thinking, and the information is processed more thoroughly. Thus, we tend to ruminate more about unpleasant events and use stronger words to describe them than happy ones," said Clifford Nass, a professor at Stanford University.
Rick Hanson also shares the idea that our minds naturally focus on the bad and discard the good. He stated, "negative stimuli produce more neural activity than do equally intense positive ones. They are also perceived more easily and quickly." This was obtained from his little experiment in which twenty people were asked to look at pictures showing anger or happiness. The participants could identify angry faces faster than happy ones even if it was so quickly.
In a journal article Baumeister co-authored in 2001, "Bad is Stronger Than Good", he concluded, "bad emotions, bad parents and bad feedback have more impact than good ones." This is "a basic and wide-ranging principle of psychology". Thus, Baumeister and his colleagues noted that bad incidents, such as losing your dreamy job and breaking up with your girlfriend or boyfriend, may have a greater impact than landing a job or receiving a marriage proposal.
Positive thoughts protect us from stress. ___
Cho hai dao động điều hòa cùng tần số có đồ thị như sau :
Phát biểu
Đúng
Sai
a. Hai dao động có cùng chu kì
b. Chu kì của hai dao động là 4s
c. Hai dao động cùng pha
d. Biên độ của hai dao động là 3cm và 2cm
Cho tập M = {(x; y) | x, y ∈ ℝ và x2 + y2 ≤ 0}. Hỏi tập M có bao nhiêu phần tử?
Khoảng cách từ điểm \(M\left( {5\,;\, - 1} \right)\) đến đường thẳng \(3x + 2y + 13 = 0\) là?
Thời gian kể từ khi ngọn sóng thứ nhất đến ngọn sóng thứ sáu đi qua trước mặt một người quan sát là
. Tốc độ truyền sóng là 
. Bước sóng có giá trị làThiết bị nào sau đây hoạt động dựa trên nguyên tắc của hiện tượng cảm ứng điện từ?
- Số nucleon mang điện trong hạt nhân \(_{56}^{130}{\rm{Ba}}\) là
Chăn nuôi tạo ra bao nhiêu phần trăm tổng lượng N2O?
Một vật dao động điều hòa với phương trình ( tính bằng cm, tính bằng s). Tần số dao động của vật là
Triển vọng phát triển trong ngành cơ khí được định hướng theo yếu tố nào sau đây?
