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EE118 FALL 2012 SAN JOSE STATE UNIVERSITY Department of Electrical Engineering TEST 2 — Digital Design I October 24, 2012 10:30 a.m. – 11:45 a.m. — Closed Book & Closed Notes — — No Crib Sheet Allowed — STUDENT NAME: (Last) Claussen , (First) Matthew STUDENT ID NUMBER (LAST 4 DIGITS): No interpretation of test problems will be given during the test. If you are not sure of what is intended, make appropriate assumptions and continue. Do not unstaple !!! Problems 1-14(4 points each) TOTAL Problems 15 – 17 (15 pts each) 1203 2 For the next 14 problems, circle the correct answer. No partial credit will be given. PROBLEM 1 (4 points) Which statement is not true? A. Any combinational circuit may be designed using multiplexers only. B. Any combinational circuit may be designed using decoders only. C. All Sequential circuits are based on cross-coupled NAND or NOR gates. D. A hazard in a digital system is an undesirable effect caused by either a deficiency in the system or external influences. E. None of the above PROBLEM 2 (4 points) For a 2-bit comparator comparing 2-bit numbers A = (a1 a0) and B = (b1 b0), what is the proper function for the f(A>B) output through logical reasoning? A. a1 b1’ + (a1 b1 + a1’b1’ ) a0 b0’ B. a1 b1’ + (a1 b1’+ a1’b1 ) a0 b0 C. a1 a0’ + (a1 a0 + b1’b0’ ) b1 b0’ D. a1 a0 + (a1 a0’+ b1’b0 ) b1 b0 PROBLEM 3 (4 points) What is the priority scheme of this encoder? Inputs Outputs I3 I2 I1 I0 O1 O 0 d d 1 d 0 1 d d 0 1 0 0 d 1 0 0 1 0 1 0 0 0 1 1 A. I3 > I2 > I1 >I0 B. I0 > I1 > I2 >I3 C. I1 > I0 > I2 >I3 D. I2 > I1 > I3 >I0 3 PROBLEM 4 (4 points) Which is the correct binary representation of the decimal number 46.625? A. 101101.001 B. 101000.01 C. 111001.001 D. 101110.101 PROBLEM 5 (4 points) Which is the decimal equivalent number of the sum of the two 8-bit 2’s complement numbers FB16 and 3748? A. 3 B. 5 C. 7 D. 9 PROBLEM 6 (4 points) For the MUX-based circuit shown below, f(X,Y,Z) = ? X Y Z f A. X’Y’ + Y’Z’ B. X’Y’Z’ + YZ’ C. XYZ’ + Y’Z D. X’Y’Z’ + YZ 1 0 MUX 4 PROBLEM 7 (4 points) Which is the correct output F of this circuit? E C B D F A A. (A’E+AB)(C’D) B. (AE+A’B)(C’+D) C. (A’E+AB)(C’D’+CD’+CD) D. (A’E+AB)(CD’)’ PROBLEM 8 (5 points) In order to correctly perform 2910  14510, how many bits are required to represent the numbers? A 8 B 9 C 10 D 11 PROBLEM 9 (4 points) Which is the negative 2’s complement equivalent of the 8-bit number 01001101? A. 11001101 B. 10111100 C. 10110000 D. 10110011 0 2-1 1 MUX 0 0 1 1 2-4 decoder 2 EN 3 5 PROBLEM 10 (4 points) Which is the correct statement describing the behavior of the following Verilog code? module whatisthis(hmm, X, Y); output [3:0] hmm; input [3:0] X, Y; assign hmm = (X < Y) ? X : Y; endmodule A. If X>Y, hmm becomes 1111. B. hmm assumes min(X,Y). C. If X<Y, hmm becomes 1111. D. hmm assumes max(X,Y). PROBLEM 11 (4 points) Which Boolean expression corresponds to the function g(W,X,Y,Z) implemented by the following “non-priority” encoder-based circuit? Assume that one and only one input is high at any time. f W X g Y Z A. Y + Z B. W + Y C. X + Y D. X + Z PROBLEM 12 (4 points) Which Boolean expression corresponds to the output of the following logic diagram? (/B = B’) A. Z = ( A(B’ + C)’ )’ + ( (B’ + C)’ + D )’ B. Z= A(B C’) + (B C’ + D) C. Z = (A(B’ + C)(B’ + C + D) )’ D. Z = A(B’ + C)’ + (B’ + C + D)’ 0 0 1 1 2 3 Encoder 6 PROBLEM 13 (4 points) Which is the correct gate-level circuit in minimal SOP form for the following circuit? A F = Y’X’ + W’ZY’X B F = YX’ + W’Z’Y’X C F = YX’ + W’ZY’X D F = Y’X + W’ZY’X’ PROBLEM 14 (4 points) For the following flow map of a certain cross-coupled gate circuit, the circuit is currently in the underlined state. If the inputs YZ change to 11, the circuit becomes meta-stable. Between which two states (WX) does the circuit oscillate ? A 00  11 B 01  10 C 11  10 D 10  00 YZ WX 00 01 11 10 00 00 11 00 10 01 10 10 10 01 11 00 00 11 01 10 10 01 01 10 G1 Y0 G2A Y1 G2B Y2 Y3 A Y4 B Y5 C Y6 Y7 G1 Y0 G2A Y1 G2B Y2 Y3 A Y4 B Y5 C Y6 Y7 OR W X Y Z X Y Z F + 5 V 7 For each of the next 3 problems, show all your work. Partial credits will be given. PROBLEM 15 (15 points) 1) Which logic variable causes the hazard for the circuit given by the K-map below? 2) Using the timing diagram, clearly show how the hazard occurs. 3) Find the best hazard-free logic function. YZ WX 00 01 11 10 00 0 0 1 1 01 0 0 0 0 11 1 0 0 0 10 1 0 1 1 8 PROBLEM 16(15 points) Analyze the following cross-coupled NAND gates by showing: (a) flow map with stable states circled and with meta-stability condition shown by arrows, (b) state table, and (c) completed timing diagram below. Note that d is the propagation delay of each gate. XY G1(t)G2(t) 00 01 11 10 00 01 11 10 Inputs  XY=00 XY=01 XY=11 XY=10 Present States  X Y G1(t) G2(t) 0 d 2d 3d 4d 5d 6d 7d 8d 9d X Y G1 G2 9 PROBLEM 17 (15 points) Using Quine-McCluskey algorithm, find the minimal SOP for the following minterm list. f(A, B, C) = (1,2,3,4,6,7) w(j) j Match I Match II 0 1 2 3 PI Covering Table

## EE118 FALL 2012 SAN JOSE STATE UNIVERSITY Department of Electrical Engineering TEST 2 — Digital Design I October 24, 2012 10:30 a.m. – 11:45 a.m. — Closed Book & Closed Notes — — No Crib Sheet Allowed — STUDENT NAME: (Last) Claussen , (First) Matthew STUDENT ID NUMBER (LAST 4 DIGITS): No interpretation of test problems will be given during the test. If you are not sure of what is intended, make appropriate assumptions and continue. Do not unstaple !!! Problems 1-14(4 points each) TOTAL Problems 15 – 17 (15 pts each) 1203 2 For the next 14 problems, circle the correct answer. No partial credit will be given. PROBLEM 1 (4 points) Which statement is not true? A. Any combinational circuit may be designed using multiplexers only. B. Any combinational circuit may be designed using decoders only. C. All Sequential circuits are based on cross-coupled NAND or NOR gates. D. A hazard in a digital system is an undesirable effect caused by either a deficiency in the system or external influences. E. None of the above PROBLEM 2 (4 points) For a 2-bit comparator comparing 2-bit numbers A = (a1 a0) and B = (b1 b0), what is the proper function for the f(A>B) output through logical reasoning? A. a1 b1’ + (a1 b1 + a1’b1’ ) a0 b0’ B. a1 b1’ + (a1 b1’+ a1’b1 ) a0 b0 C. a1 a0’ + (a1 a0 + b1’b0’ ) b1 b0’ D. a1 a0 + (a1 a0’+ b1’b0 ) b1 b0 PROBLEM 3 (4 points) What is the priority scheme of this encoder? Inputs Outputs I3 I2 I1 I0 O1 O 0 d d 1 d 0 1 d d 0 1 0 0 d 1 0 0 1 0 1 0 0 0 1 1 A. I3 > I2 > I1 >I0 B. I0 > I1 > I2 >I3 C. I1 > I0 > I2 >I3 D. I2 > I1 > I3 >I0 3 PROBLEM 4 (4 points) Which is the correct binary representation of the decimal number 46.625? A. 101101.001 B. 101000.01 C. 111001.001 D. 101110.101 PROBLEM 5 (4 points) Which is the decimal equivalent number of the sum of the two 8-bit 2’s complement numbers FB16 and 3748? A. 3 B. 5 C. 7 D. 9 PROBLEM 6 (4 points) For the MUX-based circuit shown below, f(X,Y,Z) = ? X Y Z f A. X’Y’ + Y’Z’ B. X’Y’Z’ + YZ’ C. XYZ’ + Y’Z D. X’Y’Z’ + YZ 1 0 MUX 4 PROBLEM 7 (4 points) Which is the correct output F of this circuit? E C B D F A A. (A’E+AB)(C’D) B. (AE+A’B)(C’+D) C. (A’E+AB)(C’D’+CD’+CD) D. (A’E+AB)(CD’)’ PROBLEM 8 (5 points) In order to correctly perform 2910  14510, how many bits are required to represent the numbers? A 8 B 9 C 10 D 11 PROBLEM 9 (4 points) Which is the negative 2’s complement equivalent of the 8-bit number 01001101? A. 11001101 B. 10111100 C. 10110000 D. 10110011 0 2-1 1 MUX 0 0 1 1 2-4 decoder 2 EN 3 5 PROBLEM 10 (4 points) Which is the correct statement describing the behavior of the following Verilog code? module whatisthis(hmm, X, Y); output [3:0] hmm; input [3:0] X, Y; assign hmm = (X < Y) ? X : Y; endmodule A. If X>Y, hmm becomes 1111. B. hmm assumes min(X,Y). C. If X

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Question 1 1. The ________________________ presents the movement in cash and bank balances over a period. 1 points Question 2 1. Which of the following departments is not a support center? marketing telecommunications guest transportation human resources 1 points Question 3 1. The distinction between operating and nonoperating income relates to: Continuity of income. Primary activities of the reporting entity. Consistency of income stream. Reliability of measurements. 1 points Question 4 1. Change statements include a: Retained earnings statement, balance sheet, and cash flow statement. Balance sheet, cash flow statement, and income statement. Cash flow statement, income statement, and retained earnings statement. Retained earnings statement, balance sheet, and income statement. 1 points Question 5 1. Pro forma earnings: Could be considered management’s view of permanent earnings. Are needed for the correction of errors. Are standardized under generally accepted accounting principles Are useful to compare two different firms’ performance. 1 points Question 6 1. The purpose of the statement of retained earnings is to show: the lifetime earnings retained by the corporation. the lifetime cash flow. the lifetime sales. all of the above. 1 points Question 7 1. The study of an individual financial statement item over several accounting periods is called: Ratio analysis. Vertical analysis. Horizontal analysis. Time and motion analysis. 1 points Question 8 1. Which of the following is not an example of an internal user of a company’s financial statements? member of the board of directors department head stockholder top-level manager 1 points Question 9 1. The accounting principle that requires revenue to be reported when earned is the: Matching principle Revenue recognition principle Time period principle Accrual reporting principle Going-concern principle 1 points Question 10 1. Which of the following questions can not be answered by analyzing information presented on a monthly income statement? How profitable was the hospitality operation at the end of the month? How much was spent last month to market the operation’s services? How much cash was on hand at the end of the month? What was the cost of sales for the month? 1 points Question 11 1. The sources of hotel revenue might be: profits and sales. sales, interest income, and dividend income. net income. all of the above. 1 points Question 12 1. Vertical analysis is a tool to evaluate individual financial statement items or groups of items in terms of a specific base amount. True False 1 points Question 13 1. The following is a portion of a comparative analysis: This Year Change Cost of Sales \$400,000 (30,000) The cost of sales last year was: \$370,000. \$430,000. \$30,000. \$60,000. 1 points Question 14 1. Since everyone knows what an income statement is, there is no need to put a heading on this report. True False 1 points Question 15 1. An analytical procedure in which each income statement amount is stated as a percentage of a base amount, in this case, net sales. 1 points Question 16 1. Groups outside the business who require accounting and financial information. This includes suppliers, bankers, stockholders, and investors. 1 points Question 17 1. Interpretation of data shown on a common-size income statement can be simplified by: zeroing out the income statement bookkeeping accounts. classifying dividends as a business expense. restating the percentages as a component of the sales dollar. redesigning the statement. 1 points Question 18 1. The following information is provided: Dividends paid this year \$ 30,000 Dividends declared this year 40,000 Net income this year 100,000 Retained earnings, start of year 150,000 The retained earnings at the end of this year are: \$180,000. \$220,000. \$210,000. \$260,000. 1 points Question 19 1. Horizontal analysis is also known as: Liquidity analysis. Absolute analysis. Revenue analysis. Trend analysis. 1 points Question 20 1. At the end of Year 1, the income statement for the Roadside Inn showed net income at \$50,000. At the end of Year 2, the income statement showed \$100,000 in net income. A horizontal analysis of the income statements would show the relative difference between the two years as: \$50,000. \$20,000. 100%. 50%. 1 points Question 21 1. Financial statement analysis is the application of analytical tools to general-purpose financial statements and related data for making business decisions. True False 1 points Question 22 1. Following is a portion of an income statement: 20X8 20X7 Sales \$180,000 \$190,000 In a comparative analysis, the percentage change from 20X7 to 20X8 is: A 105% decrease. A 94.7% Decrease A 5.6% Decrease A 5.3% Decrease 1 points Question 23 1. A fiscal year consists of any twelve consecutive months. True False 1 points Question 24 1. Financial statements intended for internal users. These statements present detailed information on each responsibility area ant the hotel as a whole. 1 points Question 25 1. Financial statements are usually prepared at the end of each fiscal period. True False

## Question 1 1. The ________________________ presents the movement in cash and bank balances over a period. 1 points Question 2 1. Which of the following departments is not a support center? marketing telecommunications guest transportation human resources 1 points Question 3 1. The distinction between operating and nonoperating income relates to: Continuity of income. Primary activities of the reporting entity. Consistency of income stream. Reliability of measurements. 1 points Question 4 1. Change statements include a: Retained earnings statement, balance sheet, and cash flow statement. Balance sheet, cash flow statement, and income statement. Cash flow statement, income statement, and retained earnings statement. Retained earnings statement, balance sheet, and income statement. 1 points Question 5 1. Pro forma earnings: Could be considered management’s view of permanent earnings. Are needed for the correction of errors. Are standardized under generally accepted accounting principles Are useful to compare two different firms’ performance. 1 points Question 6 1. The purpose of the statement of retained earnings is to show: the lifetime earnings retained by the corporation. the lifetime cash flow. the lifetime sales. all of the above. 1 points Question 7 1. The study of an individual financial statement item over several accounting periods is called: Ratio analysis. Vertical analysis. Horizontal analysis. Time and motion analysis. 1 points Question 8 1. Which of the following is not an example of an internal user of a company’s financial statements? member of the board of directors department head stockholder top-level manager 1 points Question 9 1. The accounting principle that requires revenue to be reported when earned is the: Matching principle Revenue recognition principle Time period principle Accrual reporting principle Going-concern principle 1 points Question 10 1. Which of the following questions can not be answered by analyzing information presented on a monthly income statement? How profitable was the hospitality operation at the end of the month? How much was spent last month to market the operation’s services? How much cash was on hand at the end of the month? What was the cost of sales for the month? 1 points Question 11 1. The sources of hotel revenue might be: profits and sales. sales, interest income, and dividend income. net income. all of the above. 1 points Question 12 1. Vertical analysis is a tool to evaluate individual financial statement items or groups of items in terms of a specific base amount. True False 1 points Question 13 1. The following is a portion of a comparative analysis: This Year Change Cost of Sales \$400,000 (30,000) The cost of sales last year was: \$370,000. \$430,000. \$30,000. \$60,000. 1 points Question 14 1. Since everyone knows what an income statement is, there is no need to put a heading on this report. True False 1 points Question 15 1. An analytical procedure in which each income statement amount is stated as a percentage of a base amount, in this case, net sales. 1 points Question 16 1. Groups outside the business who require accounting and financial information. This includes suppliers, bankers, stockholders, and investors. 1 points Question 17 1. Interpretation of data shown on a common-size income statement can be simplified by: zeroing out the income statement bookkeeping accounts. classifying dividends as a business expense. restating the percentages as a component of the sales dollar. redesigning the statement. 1 points Question 18 1. The following information is provided: Dividends paid this year \$ 30,000 Dividends declared this year 40,000 Net income this year 100,000 Retained earnings, start of year 150,000 The retained earnings at the end of this year are: \$180,000. \$220,000. \$210,000. \$260,000. 1 points Question 19 1. Horizontal analysis is also known as: Liquidity analysis. Absolute analysis. Revenue analysis. Trend analysis. 1 points Question 20 1. At the end of Year 1, the income statement for the Roadside Inn showed net income at \$50,000. At the end of Year 2, the income statement showed \$100,000 in net income. A horizontal analysis of the income statements would show the relative difference between the two years as: \$50,000. \$20,000. 100%. 50%. 1 points Question 21 1. Financial statement analysis is the application of analytical tools to general-purpose financial statements and related data for making business decisions. True False 1 points Question 22 1. Following is a portion of an income statement: 20X8 20X7 Sales \$180,000 \$190,000 In a comparative analysis, the percentage change from 20X7 to 20X8 is: A 105% decrease. A 94.7% Decrease A 5.6% Decrease A 5.3% Decrease 1 points Question 23 1. A fiscal year consists of any twelve consecutive months. True False 1 points Question 24 1. Financial statements intended for internal users. These statements present detailed information on each responsibility area ant the hotel as a whole. 1 points Question 25 1. Financial statements are usually prepared at the end of each fiscal period. True False

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An enterprise information portal is: Answers: A Web-based interface and integration of MIS, DSS, EIS and other tools giving providing selected access A website for an organization intended to provide information to customers A website for an organization intended to provide information to employees and stakeholders of the organization A website that provides the information required by the SEC

## An enterprise information portal is: Answers: A Web-based interface and integration of MIS, DSS, EIS and other tools giving providing selected access A website for an organization intended to provide information to customers A website for an organization intended to provide information to employees and stakeholders of the organization A website that provides the information required by the SEC

An enterprise information portal is: Answers: A Web-based interface and … Read More...