#digital circuits

Oct 29, 2023 • Sunday

GUESS WHO'S BACK

Exams are just around the corner, and I have recovered (mostly) so got back to productivity. I missed my notes <3

The 1989tv vault tracks are stuck in my headddddd my favourite is Now that we don't talk. If you are a swiftie, what is your favourite vault track?

Things I did today:

40 out of 55 slides of a PPT

19 out of 27 concepts from Module 1 of computer science

Ate biryani :3 (and then had a tummy ache LOL)

P.S. the whiteboard is @studaxy's I STOLE IT (jk, they gave it to me lol)

The intersection of digital circuits and the Internet of Things (IoT) heralds a transformative era for both fields. As IoT devices become increasingly embedded in our daily lives, the role of digital circuits— the foundation upon which these devices operate—cannot be overstated. This blog explores the evolving landscape of digital circuits within IoT devices, emphasizing the pivotal role of designing digital circuits, digital circuit boards, and the broader spectrum of digital electronics circuits in shaping the future of technology.

Digital Circuits: The Heartbeat of IoT

At the core of every IoT device, from smart thermostats to wearable health monitors, lies a digital circuit. These circuits process and manage the binary data that enable devices to perform their designated functions. As IoT devices continue to proliferate, the demand for more sophisticated, energy-efficient, and smaller digital circuits is on the rise. This demand challenges engineers and designers to innovate and push the boundaries of digital circuit design.

Advancements in Designing Digital Circuits for IoT

The design of digital circuits for IoT devices is evolving to meet the demands of a connected world. Energy efficiency and miniaturization are the driving forces behind recent advancements. IoT devices often operate in power-constrained environments, making energy efficiency a critical aspect of their design. Engineers are developing low-power digital circuits that can perform tasks without draining battery life, enabling IoT devices to operate longer and more reliably.

Moreover, the trend towards miniaturization requires digital circuits to occupy less space without compromising performance. Advanced digital circuit boards and chip design techniques, such as System on Chip (SoC) and Integrated Circuit (IC) technology, are instrumental in achieving this goal. These technologies integrate multiple functions onto a single chip, reducing the physical footprint of digital circuits in IoT devices.

Digital Circuit Boards: Enabling Complex IoT Applications

The digital circuit board is where the magic happens in IoT devices. It is the platform that houses the digital electronics circuits, providing pathways for data and power to flow. The complexity of IoT applications necessitates the design of sophisticated digital circuit boards capable of supporting multiple functionalities, including sensing, processing, and communication, all while maintaining compactness and energy efficiency.

Innovations in PCB (Printed Circuit Board) technology, such as flexible PCBs and HDI (High Density Interconnect) PCBs, offer new possibilities for IoT devices. These advancements allow for more compact designs and the ability to incorporate more components onto a single board, enabling IoT devices to become smaller, faster, and more capable.

The Role of Digital Electronics Circuits in IoT

Digital electronics circuits are at the forefront of IoT innovation. These circuits are not only responsible for the functionality of IoT devices but also for their ability to connect and communicate with other devices and networks. The future of IoT depends on the development of digital electronics circuits that can efficiently process and transmit data in real-time, ensuring seamless connectivity and interoperability among devices.

The Future of IoT: Challenges and Opportunities

As the IoT ecosystem continues to expand, the challenges associated with designing digital circuits for IoT devices also grow. Issues such as data security, privacy, and the integration of diverse technologies must be addressed. However, these challenges also present opportunities for innovation. The development of new materials, design methodologies, and manufacturing processes can lead to breakthroughs in digital circuit design, further advancing the capabilities of IoT devices.

Conclusion

In the previous chapter we learned what digital information is. Digital information is represented as bits, which can take on values of either 1 or 0. In this chapter we begin to explore how to perform calculations and do other work using digital information.

Much of what we will be discussing was formalized by George Boole (1815–1864) in his paper An Investigation of the Laws of Thought, on Which Are Founded the Mathematical Theories of Logic and Probabilities, published in 1854. It had few applications at the time, but eventually scientists and engineers realized that his system could be used to create efficient computer logic. The branch of mathematics involving digital logic is aptly named Boolean Algebra.

Basic Operators

My semester just started on August 24th so it only has been a week since school started. I wanted to update to let you guys know how I like my classes so far.^^

Computer Science I: I absolutely love it! We started off learning how to do flowcharts and pseudocodes the first week. This week we started to learn how to program with Python. Python is a great way to start coding because it is very close to English. My professor is very nice and helps me whenever I have a question about how to continue my program. I can’t wait to continue to learn more things about coding~

Digital Circuits: Not my favorite class by far. My professor jumps from topic to topic and seems to think that everyone understands what he is talking about. He lectured about the number system and how to convert between bases the first week. This week, he lectured on Boolean algebra. I asked my friends how they were doing in class and to my relief, they too did not like how he was teaching and was very confused about the topics. I have a 2 1/2 hour break between computer science and digital circuits so we hang out and do our digital circuits homework in a room with tutors so that they can help us when we are stuck. When I get home, most days I do the easy assignments first so that it is out of the way then I crack open the pdf of the book for digital circuits and self learn all the materials because when I get home and try to understand my lecture notes it is disorganized and had no label between each topic. 

Powering wearables with TENGs and energy harvesting

The increased popularity of wearable electronic devices has given rise to a number of techniques for extending relatively limited battery life.

“Energy harvesting is one such approach, converting ambient energy into electric energy utilizing such devices as onboard solar cells and piezoelectric generators,” reported EDN’s Paul Pickering. “TENGs are another.”

TENGs, also known as triboelectric…

Mathematical rules are based on the defining limits we place on the particular numerical quantities dealt with. When we say that 1 + 1 = 2 or 3 + 4 = 7, we are implying the use of integer quantities: the same types of numbers we all learned to count in elementary education. What most people assume to be self-evident rules of arithmetic—valid at all times and for all purposes—actually depend on what we define a number to be.

For instance, when calculating quantities in AC circuits, we find that the “real” number quantities which served us so well in DC circuit analysis are inadequate for the task of representing AC quantities. We know that voltages add when connected in series, but we also know that it is possible to connect a 3-volt AC source in series with a 4-volt AC source and end up with 5 volts total voltage (3 + 4 = 5)! Does this mean the inviolable and self-evident rules of arithmetic have been violated? No, it just means that the rules of “real” numbers do not apply to the kinds of quantities encountered in AC circuits, where every variable has both a magnitude and a phase. Consequently, we must use a different kind of numerical quantity, or object, for AC circuits (complex numbers, rather than real numbers), and along with this different system of numbers comes a different set of rules telling us how they relate to one another.

An expression such as “3 + 4 = 5” is nonsense within the scope and definition of real numbers, but it fits nicely within the scope and definition of complex numbers (think of a right triangle with opposite and adjacent sides of 3 and 4, with a hypotenuse of 5). Because complex numbers are two-dimensional, they are able to “add” with one another trigonometrically as single-dimension “real” numbers cannot.