relationship of ASCII to the UCS encoding? For communication and exchange of electronic information. The way they encode each character and the number of bits used. What features are provided by UTF- 8 that are not provided by ASCII? Why was it chosen to replace ASCII as the standard for the web? A variable with encoding that can represent every character in the Unicode character set. UTF-8 functions better on the web. It can translate foreign languages. 1. Using the ASCII encoding scheme‚ write your name
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Unit 1.1 Exercise 1.1.1 103 102 101 100 1000 100 10 1 2 9 3 1 2000 +900 +30 +1 Decimal # 2931 Exercise 1.1.2 22 21 20 4 2 1 1 1 0 4 +2 0 Decimal # 6 Binary # 1102 Exercise 1.1.3 21 20 2 1 1 1 2 +1 Binary # 112 Decimal # 3 Exercise 1.1.4 24 23 22 21 20 16 8 4 2 1 1 0 0 1 0 16 0 0 +2 0 Decimal # 18 Binary# 100102 Exercise 1.1.5 27 26 25 24 23 22 21 20 128 64 32 16 8 4 2 1 1 1 1 0 0 0 1 0 128 +64
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negative voltage Voltages vary between +3/-3 and +24/-24 depending on the circuit Signaling (encoding) Defines how the voltage levels will correspond to the bit values of 0 or 1 Examples: Unipolar‚ Bipolar RTZ‚ NRZ‚ Manchester Data rate: describes how often the sender can transmit data 64 Kbps once every 1/64000 of a second Page 6 Signaling of Bits •Two-level encoding: the signal can only take on a strictly negative or strictly positive value (-X or +X‚ where X represents
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Quality Alerts Found on page http://www.amazon.com/ The character encoding specified in the HTML content-type meta tag is "ISO-8859-1". The actual encoding of the page seems to be "UTF-8". Incorrect character encoding defined Found on page http://www.amazon.com/ The character encoding is specified as "ISO-8859-1" in the HTML content-type meta tag and as "UTF-8" in the HTTP content-type header. Contradictory character encoding specifications Are you the webmaster of this site? Register as user to
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SIM: A subscriber identity module (SIM) on a removable SIM card securely stores the service-subscriber key (IMSI) used to identify a subscriber on mobile telephony devices (such as mobile phones and computers). A SIM card contains its unique serial number‚ internationally unique number of the mobile user (IMSI)‚ security authentication and ciphering information‚ temporary information related to the local network (also temporary local id that has been issued to the user)‚ a list of the services the
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Unit 1 Labs Lab 1.1: Reading Binary Exercise 1.1.1 – 2931 103 102 101 100 1000/ 100/ 10/ 0 2000+900+30+1 = 293110 Exercise 1.1.2 – 1102 22 21 20 1102 = 610 Exercise 1.1.3 – 112 = 310 Exercise 1.1.4 – 100102 = 1810 Exercise 1.1.5 – 111000102 = 22610 Exercise 1.1.6 – 15610 = 100111002 Exercise 1.1.7 – 25510 = 111111112 Exercise 1.1.8 – 20010 = 110010002 Exercise 1.1.9 – 2^7 2^6 2^5 2^4 2^3 2^2 2^1 2^0 128 64 32 16 8 4 2 0 binary 0 0 0 0 1 0 0 1 0 0 0 0 8 0 0 0 decimal 8 Exercise 1.1.10
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Homework Labs 1.1 - 1.4 Thursday 8:30-12:30 6/25/2013 Exercise 1.1 Base 10 Mapping for decimal number 2931 10^3 10^2 10^1 10^0 2 9 3 1 2x1000=2000 + 9x100=900 + 3x10=30 + 1x1=1 = 2931 Exercise 1.1.2 Mapping for binary number 110 base 2 4 2 1 * * * 1 1 0 = = = 4 + 2 + 0= 6 Exercise 1.1.3 Mapping for binary number 11 base 2 2 1 * * 1 1 = = 2 + 1= 3 Exercise 1.1.4 Mapping for binary number 10010 base 2
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Characters Map. These are steps to open characters map. In another way‚ we can found special characters by pressing a combination of key on keyboard: The character set most commonly used in computers today is Unicode‚ a global standard for character encoding. Internally‚ Windows applications use the UTF-16 implementation of Unicode. In UTF-16‚ most characters are identified by two-byte codes. The less commonly used supplementary characters are each represented by a surrogate pair‚ which is a pair of
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Exercise 1.1.9 Exercise 1.1.10 Exercise 1.1.11 Exercise 1.1.12 Lab 1.1 Review: 1. 127 to binary 2. Equivalent because the 0’s are just placeholders. 10 = 0010 3. First 4 digits of a Base 5 numbering system would be (left to right) 625 125 25 5 4. The leading Zeros would make it difficult to build a decimal to binary conversion table in excel. Excel doesn’t see numbers with leading 0s as real numbers. Exercise 1.2.1 110 and 1001 = 1111 Exercise 1.2.2 110 and 101 = 1011 Exercise 1.2.3
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Encoding‚ Storage and Retrieval: The Processes of Memory Memory is very complex and a little mysterious. There is a lot to know about the way one can organize a lifetime of memories. Research has helped clarify several missing elements in the traditional three-stage memory model. One can now understand the way information is changed as it is encoded‚ stored and then later retrieved. These three processes can be described similarly to the memory of a computer. The first step to remembering a piece
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