MCO LECTURE TEST

MCO IMPORTANT QUESTIONS 1. An Embedded System is made up of:- A microcontroller programmed for a specific purpose within a larger system 2. IoT stands for: Internet of Things 3. IoT is concerned with: Sending data from embedded systems to the cloud and getting back control information 4. MBED is: a platform for 32-bit ARM Cortex M MicroControllers 5. SOC refers to: A microController 6. MicroControllers were first developed in: 1970's 7. A Microprocessor has its CPU, RAM, ROM and I/O all inside a single chip or SOC- False 8. Apple will be moving away from SOC's in their laptops to Intel Based Processors in 2020.- False 9. In 2020 there are over 160 boards supported by the MBED Platform- True 10. Pelion Device ready means that the microcontroller can connect to the PELION cloud- True 11. The FRDM-K64 MicroController supports all the MBED platform development capabilities- True 12. The FRDM-K64 is an ARM M3 Microcontroller- False 13. API stands for : Application Programmer's Interface 14. MBED API's work on all MBED supported boards- True 15. Any computer with a web browser can create a program using the MBED CLOUD Compiler- True 16. When you program using the MBED compiler, it supports printf, scanf, getc, and putc- True 17. Just about every smart device will have a MicroController in it-True 18. In the year 2022 there will be approximately 40 Billion MicroControllers sold in that year alone.- True 19. MicroControllers go from 4 bit size all the way to 64 bits in size- True 20. 32-bit ARM Cortex M version processors were developed by ARM specifically for IoT- True 21. ARM M0, M0+, and M1 are used for: are battery powered and used in END devices such as sensors 22. ARM Cortex M4 MicroControllers are:typically powered from an outlet and used to connect to a cloud server 23. All Mbed API's can be used by all 160+ ARM Cortex M version microcontrollers- True 24. HAL stands for Hardware Abstraction Layer- True 25. The Hardware Abstraction layer allows over 160+ Microcontrollers to share the same set of API's- True 26. Which of the following statements is true:- MBED libraries are open source and royalty free and Arduino Libraries are not 27. The MBED platform provides Security from the chip to the cloud and back again- True 28. ASCII stands for: American Standard Code for Information Interchange 29. All UPPER CASE ASCII characters A-Z in HEX are 0x20 bigger than the lower case ASCII characters a-z- False 30. 31. Printable ASCII characters go from hex value 0x20 to 0x7E- True 32. ASCII characters go from hex 0x00 to 0xFF- False 33. If you hold down the CONTROL KEY and press G you will generate the HEX value 07- True 34. When you hold down the CONTROL KEY and press J, it generated a 0x0A or Line Feed, and the cursor on the screen will move vertically down.- True 35. If you hold down the CONTROL KEY and PRESS L, it will generate a 0x0C (Form Feed) which will eject paper on a printer or clear the characters on your screen.- True 36. If you hold down the CONTROL KEY and press M, it will generate a 0x0D (Carriage Return) which will put the cursor back to the start of the SAME line- True 37. Any printable HEX ASCII character value (0x20-0x7E) when sent to a PC screen or LCD screen will display the same character, however, ALTernate charcters are NOT standard and will not display the same characters on PC Screens and LCDs.- True

38. When you add the 2 binary numbers 11010110 + 11101011 you will get: 11000001 plus a carry 39. When you add the HEX values 4D + 9E you will get: EB without a carry 40. When you do the HEX subtraction 00 - CE you will get: 32 plus a borrow 41. When you do the BINARY subtraction 10110110 – 11101011 you will get: 11001011 with a borrow 42. For unsigned char and short, all the numbers are positive and the N-bit (MSB) is ignored- True 43. For signed char and signed short, Half of the numbers are Positive (N=1) and Half the numbers are Negative (N=0)- False 44. When the Z-bit is 0, it means the result was 0- False 45. For signed numbers if you ADD 2 Numbers of the SAME SIGN and get a RESULT of opposite sign, then you have a SIGNED OVERFLOW and V=1- True 46. For Signed Numbers if you ADD 2 numbers of OPPOSITE sign or SUBTRACT 2 numbers of the SAME sign, then there is NO Signed Overflow and V=0- True 47. If you ADD 2 N-bit (N=4,8,16,32,64) bit numbers and get a result of N+1 or if you SUBTRACT a larger number from a smaller one then you have an UNSIGNED OVERFLOW and C=1- True 48. If you add the Hex values: AB + CD then the answer is: 78 with N=0, Z=0, V=1, C=1 49. If you ADD the BINARY VALUES 10101101 + 11101101 then the answer is: 9A with N=1, Z=0, V=0, C=1 50. When you perform the HEX SUBTRACTION 8A - 6B you will get: 1F with N=0, Z=0, V=1, C=0 51. When you perform the Binary Subtraction 01111101 – 11011101 you will get: 10100000 with N=1, Z=0, V=1, C=1 52. In the 1960's you were able to program computers in OCTAL- False 53. In the 1970's you were able to program computers in HEX- False 54. Of BINARY, HEX, OCTAL and ASSEMBLY Language programs, ASSEMBLY Language is the only Human Readable Language- True 55. When you compile a Program in C, it has to first convert it to ASSEMBLY Language, to be able to carry out the instructions using the specific registers in that CPU- True 56. Binary Machine code, represents patterns of voltages, and this is the only form of the program that the CPU can understand- True 57. Octal is base 8 which means Octal has digits 0-8- False 58. When you convert the binary number 11010101 to Octal you will get: 325 59. The Octal Number 251 in binary is: 10101001 60. The Binary number 11101011 in HEX is: EB 61. The HEX value DA in Binary is: 11011010 62. The DECIMAL NUMBER 241 in BCD is: 1001000001 63. The BCD number 110010101 in Decimal is: 195 64. The unsigned HEX value AB in decimal is: 171 65. The decimal value 165 in HEX is: A5 66. For unsigned char and unsigned short all numbers are considered to be positive and the MSB(Most SIgnificant Bit) or N (Negative) bit has no meaning- True 67. For signed char and signed short, half the numbers are Positive (MSB=1) and half the numbers are Negative (MSB=0)- False 68. If you convert the HEX value 58 as a signed value to decimal, you will get 88- True 69. If you convert the HEX value A7 as an unsigned char value to decimal, you will get -89- False 70. The offset between unsigned short values whose MSB is 1 and signed short whose MSB is 1 is 256- False 71. For unsigned short, the hex value 0xffff is equivalent to -1- False 72. Inside a MicroController, the ALU or Arithmetic and Logic Unit is part of the CPU where ADDING/SUBTRACTING , ANDing, ORing, and XORing take place- True 73. The CCR or Condition Code Register (Status Register) contains the bits NZVC that are used to determine program flow in a MicroController.- True

109. For the RGB Leds on the FRDM-K64 a 1 (3.3volts) turns ON the LED and a 0 (0 volts) turns OFF the LED.- False 110. All ports A,B,C,D, and so on have 32 bits associated with them.- True 111. The API required to control a LED is DigitalOut which is found in the INPUT/OUTPUT Drivers Sections- True 112. To have a variable called red_led control the RED led on the FRDM-K64, you would use:- DigitalOut red_led(LED1); 113. The statement wait(0.5); wasted 0.5 milliseconds- False 114. The Left Pushbutton on the FRDM-K64 can be referenced by either SW3 or PTA4.- True 115. The Right Pushbutton on the FRDM-K64 can be referenced by either SW3 or PTA4.- False 116. When a pushbutton on the FRDM-K64 is PRESSED it generates a value of 1, and when NOT PRESSED it generates a 0.- False 117. To import projects into MCUXpresso, you select GENERAL/IMPORT/EXISTING PROJECTS into WORKSPACE- True 118. You will use the CMSIS DAP Probe when you connect to target- True 119. In MCUXpresso you get to the memory browser by WINDOW/SHOW VIEW/MEMORY BROWSER- True 120. When you single step and the debugger gives you a strange response, you can continue by choosing STEP RETURN- True 121. If you have a 3.3 probe and a ground probe with a current limiting resistor, if you move the ground probe around while holding the 3.3 probe fixed, and segments light up, then it is a Common Anode display.- True 122. POTS stands for: Plain Old Telephone Service 123. CODEC stands for: COmpression/DECompression 124. MODEM stands for MOdulation/DEModulation- False 125. Which of the following is NOT TRUE about a MODEM- Sends Digital Voltages through POTS 126. Because of Inductance and Capicitance in POTS, you cannot send and receive DIGITAL VOLTAGE Patterns- True 127. When the PC downloads BIN files to the FRDM-K64, it compresses them before it sends them- False 128. For COMPRESSED Serial Data, BAUD RATE is the number of BITS/SEC transferred between computers.- False 129. The default Baud Rate for the FRDM-K64 is 9600 Baud 130. If you want to increase the BAUD RATE beyond the DEFAULT, you can no longer use printf as it is- True 131. SCI stands for: Serial Communications Interface 132. The SCI is a parallel to parallel and serial to serial interface device- False 133. A parallel data transfer is accomplished by Shifing Data- False 134. Which of the following is NOT TRUE about SHIFTING on the SCI.- Shifting takes place from the CPU to the Transmitter reg of SCI 135. When there are no characters being transferred from the TX of SCI to the PC Screen, or from the PC Keyboard to the RX register of the SCI, the IDLE Condition is: HIGH 136. Hitting a key on the PC Keyboard is: A random Asynchronous Event 137. Which of the following is TRUE about START and STOP bits- A Start bit is a LOW bit that tells the receiving unit that data follows, and a STOP bit is a HIGH bit that gives the receiving unit time to deal with the data 138. Which of the following is NOT true- None of the above

139. RDRF stands for: Receiver Data Register Full Flag 140. TDRE stands for: Transmitter Data Register Empty Flag 141. Which of the following is TRUE about the TDRE Flag- When a character is stored to the Transmitter of the SCI, the TDRE Flag of the SCI goes to 0 142. Which of the following statements is TRUE about the RDRF Flag- When a character is pressed on the PC keyboard, and has been completely shifted into the Receiver Register of the SCI, RDRF will be 1 143. Which of the following statements is TRUE- When a character in the Receiver register of the SCI, is loaded into a CPU register (variable), RDRF will go to 0 and the R/W line is high 144. Which of the following is TRUE- When a Character in the CPU is Stored to the Transmitter register of the SCI, the R/w is LOW and the TDRE will go to 0 145. For an Asynchronous Serial system, the transmitter of one device is connected to the transmitter of the other device and the receiver of one device is connected to the receiver of the other device.- False 146. SPI stands for: Serial Peripheral Interface 147. MOSI stands for Many Out Single In- False 148. MISO stands for Master In Slave Out- True 149. To connect two SPI's you connect MOSI from one SPI to MOSI of the other SPI, and MISO from one SPI to MISO of the other SPI- True 150. Which of the following is TRUE when a MASTER SPI is connected to a SLAVE SPI- When 8 bits goes out of the MASTER on MOSI, 8 bits comes into the Master on its MISO from the SLAVE 151. To connect up four 7 segment displays to the FRDM-K64, you would need four serial to parallel shift registers, and only 4 connecttions to MOSI, MISO, SCLK, and SS- False 152. The Putty screen is made up of 24 columns by 80 rows- False 153. To have a <CR> go to the screen from a program in a printf you use '\r, and when you want a <LF> you use '\n- False 154. Serial Asynchronous communications are typically faster than Serial Synchronous Communicatons- False 155. To have ALTernate characters come to the PUTTY screen, you hold down the ALT key and type in the HEX value of the ALTernate character- False 156. Analog Data input is made up of constantly changing information- True 157. Pure Analog data can be directly dealt with by a computer- False 158. A Analog to Digital converter, converts Analog data to a form a computer can deal with- True 159. The Nyquist Shannon Sampling Theorem states that the sampling frequency must be at least- Double the frequency of the analog signal being sampled 160. When you convert a continuous analog signal into a digital one, any deviations from the ideal equivalent analog values is known as: Quantization Error 161. Increasing the Sampling Rate of the A2D converter will reduce the amount of Quantization error. – True 162. An A2D converter that has a lower sampling rate will use up less power than an A2D with a higher sampling rate – True 163. Digital Displays are connected to digital sensors that produce the information that the display uses. - False 164. In your car, microcontroller based sensors send data through the car using a CAN bus. CAN stands for: Controller Area Network 165. Digital Displays will show less detailed information than an Analog Display because of: quantization error