The field trip and the recycling video were both eye opening experiences. Before this, I had no idea what happened to my electronics once I got rid of them. It was very surprising to find out that Temple had a recycling program like we do. I find it very cool that we have a service like that, it is a good way for our school to help the environment and it makes us unique from other universities. I think that Temple is doing a great job running the electronic recycling center we have now. Although, I had no idea we had such a thing until this field trip. In my opinion, an area of improvement could be making it known publicly that we have a service like this. I know plenty of students have electronics sitting around that our recycling program could put to good use. It is a shame that not many people know we have a program like this. A way for our recycling center to get public recognition would be having the school send out an email to all students announcing we provide those services. Another way for publicity could be posting up posters throughout campus.
This week we covered transmission systems and packet switching. We started off this weeks lesson by learning the importance of the word Bandwidth. Bandwidth can be defined as “a range within a band of wavelengths, frequencies, or energies, especially: a range of radio frequencies which is occupied and modulated carrier wave, which is assigned to a service or over a device which can operate”. Frequency Bandwidth is the “actual frequency band allocated by Federal Communications Commission (FCC)”. Upon diving deeper into the topic of transmission systems, we learned about circuit switching. Circuit switching is when “two nodes communicate with each other over a dedicated communication path. There is a needed pre-specified route for which data will travel and no other data is permitted. The three phases of circuit switching include: establishing a circuit, transferring the data, and disconnecting the circuit”. Packet switching is when a file is diced up placed into different packets. Each packet then travels its own path to the destination computer where all packets are unpacked and reassembled. An interesting diagram that explains this better can be found at: http://computernetworkingsimplified.in/physical-layer/overview-circuit-switching-packet-switching/
All information used to create this blog post can be found at https://templeu.instructure.com/courses/42728/files/2905887?module_item_id=724153
I chose to evaluate foolish tech prediction number 4 for this weeks assignment. “There is no reason anyone would want a computer in their home”-Ken Olsen. Ken Olsen was the founder of Digital Equipment Corporation in 1977.In the 1970’s, this company was a huge part of the digital computing industry. Four short years after Ken Olsen said the quote stated previously, the IBM PC was released and shortly after indicted into the “high-tech” hall of fame”. I chose to review this tech prediction because I found it the most humorous. I found it funny because almost everyone I know has a computer in their home that they use all day. This prediction relates to the digital world because computers are a huge focal point of the technology industry in today’s society.
This week in class we discussed the purpose of two codebooks, ASCII and Unicode, also known as UTF-8. It is important to be able to represent text in binary form when information is entered to a computer. This type of text can be encoded using ASCII. ASCII is a 7-bit code. In addition to the 7-bit code, the PowerPoint from class stated that there is an additional parity bit, also known as an extended bit in some situations. ASCII can be used to represent a variety of things including: numerals, letters in upper- and lower-case form, special symbols like the $ or @, and commands in the computer that represent things like line feeds. ASCII encoding can be confusing, so I decided to include a site example. If the “A” key were to be pressed, the ASCII code “1000001” would be sent to the computer’s CPU. ASCII was the most common form of character encoding until 2007 when UTF-8 overtook the title.
UTF stands for Unicode Transformation Format. Unicode is defined as “an international encoding standard to support different languages.” The type of encoding used in UTF-8 is variable-length and uses 8-bit code units. This encoding process was designed for backwards compatibility with ASCII. A website I found that also explains the difference between these two types of code books can be found here https://medium.com/@apiltamang/unicode-utf-8-and-ascii-encodings-made-easy-5bfbe3a1c45a
Sources: All information posted above was obtained through our class PowerPoint which can be found at: https://templeu.instructure.com/courses/42728/files/2685405?module_item_id=691593
This week we focused on bits. Bit stands for Binary Digit. The system that utilizes bits is called the binary system. The binary system “facilitates the use of inexpensive and reliable equipment for information storage, processing, and transmission”. The binary system was chosen to represent this because we needed a system with an encoding process that was unique, standardized, and robust. The main idea of this system was to convert the physical and or real world into bits. Bits can form a universal representation for things like text, sound, and images to name a few. In class we also discussed the difference between the base-10 system and the base-2 system. The base-10 system is commonly known as the decimal system, which is what humans use. There are 10 digits used in this system. The base-2 system or the binary system, is used by computers which uses digits 1 and 2 to represent all values.