Anyway, the whole of today we had "Jovial John" where this morning he firstly played countdown with us. To be specific, a mixture of countdown with Maths and English together. For the maths section I had actually got the closest number of 149 but decided to say 151 because I added the one instead of subtracted it. However, it was a fairly fun warm up. Then for about half of the day, "Jovial John" spoke about the content within U10A2, these included:
- Analogue vs Digital - We learnt that as analogue is a huge file overall, to convert to digital it must use samples (sampling rate). However, the more samples used, the bigger the file but the more accurate.
- Amplitude, Frequency, Cycles & Periods - The loudness, how fast paced it is (in Hz), and the wavelengths.
- Binary, Bits, Bytes - In binary, there are seven smaller bits in a single byte, where each one will contain information such as packets and frames (with addresses and sequences).
- Serial vs Parallel - Serial is when one bit is sent after one bit, being slower whereas parallel is much faster as it can send multiple bits in a high repetition without the need to request permission.
- Synchronous (serial) and Asynchronous (parallel) Transmission - Syn has clocking and asyn has no clocks. This is related to serial and parallel.
- Error Detection and Error Correction - This was covered previously, with the different types of check sums such as parity check (odd/even protocol) and CRC Cyclic Redundancy Checks.
- Data Transmission: Bandwidth, Noises, Compression - Bandwidth is how fast the data is being sent. Noises are interference either internally from the system or from externally such as walls and other obstructions/interference's.
- Channel Types - Such as light, microwaves, radio and electrical. Different channel types has its pros and cons. The current fastest channel type is light (fiber optic) because light can't be disrupted by noises as well as it travels at a very fast speed.
Moreover, throughout the explanations of the pitch "Jovial John" did, he gave us the opportunity and chance to research our own definitions to enhance our learning and independence studying skills. Afterwards, we did small mini class discussions. In the end, we did a recap and answered some questions, this led to "Jovial John" covering anything we don't understand. Personally for me, I did not understand the Huffman coding (part of a way to compress data) and required a bit of recap for Task 3.
I have in the end learnt that Huffman coding assigns the most used letters for a text message with the lowest value and the least use letters with the highest value, this is to increase speed. However, this means it is needed to encode at the start and thus, decode a the end which also makes it a bit slower but it saves a lot of bandwidth as a result.
With the remaining few hours of the day, the whole class worked on their work. I used the support "Jovial John" gave me on Task 3 for the distinction criteria and started the document. I created a table where I started to compare the similarities and differences in one table. I will be completing this over the weekend. I have also ended up submitting the whole of U22T2 to John. I took longer than several others because I have attempted to include a bit more context to help my explanations as I have used my own words whereas I have discovered some students have directly copied their context from the text book. However, this should be a tutors matter and they should be able to spot this immediately.
We also had smaller fun times when we played the Cisco Binary Game and revealed the blog stars of the month? It was Ewan, Sami, and Matt B. In the end, I came second for the game at a score of 13600 where Joe B got 14000 +, this was because I was pretty slow at the start.
Overall today was very productive but also very tiring. On Monday I believe I will start fresh again at a very concentrated/productive mood!
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