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About 100,000 bytes How many machine cycles can execute per second on a modern computer? One cycle per second 100,000 cycles per second Billions of cycles per second Exactly two cycles per second What is source code? The original programs written when computers were invented, that still serve as source to all current programs The first hardcopy ever made of a program Code specifically written for the operating system A text file written by a programmer containing instructions usually written in a high level language Which of these would not usually be on a motherboard? Memory Power supply unit (a connector for the unit is on the motherboard but not the unit itself) CPU PCI bus A computers BIOS does not: Shutdown the computer Identify component hardware Prepare the computer so that other programs can load and execute Be loaded first when the computer is turned on Python is: an operating system a compiled language a firmware an interpreted language Current hard drive sizes are expressed in: kilobytes (KB) gigabytes (GB) megabytes (MB) millibytes (MLB) A computer program that converts an entire program into machine language is called a/an Commander Simulator Compiler Interpreter Which of the following will happen when data is entered into a memory location? It is added to the current content at the location It is ignored, and the current content is maintained It is subtracted to the current content at the location It will erase and replace the previous content The difference between memory and storage is that memory is . and storage is .. Permanent, temporary Temporary, permanent Slow, fast Hardware, software Part II Short answer Consider the binary number 1110010. What is its hexadecimal equivalent? 1110010 in binary = 64+32+16+2=114 in base 10. 114 in base 10 = 72 in base 16. Answer: 72 Assume the human heart beats at 60 beats per minute. What is the rate of beating expressed in Hz? (60 beats/min)x(1 min/60 sec) = 1 beat/sec = 1 Hz To get a correct measurement of a human hearts dynamics, at what rate do you sample? (Express the answer in Hz.) Nyquist says sample at twice the highest frequency, so 2 Hz Assume you have 8 bits for quantization, how many bits would be needed to record an hour of measurements from the human heart? (8bits)x(2/sec)x(60 min/hour)x(60 sec/min) = 57,600 bits (Note this equals 7,200 bytes) Part III A. For the next portion, examine the statement, indication if it is or is not a proposition. If it is a proposition, indicate its truth value (otherwise indicate N/A). StatementProposition (Y or N)T or F or N/A1+5=6YT1+5=10YFX+5=10NN/AIt is raining outsideYF (at the moment)Is it raining outside? NN/AThe moon is made of cheeseYFThis statement is falseNN/A Part III B. Logical implications Consider the following propositions: P = You learn the basics of computers Q = You get a good job Assume the implication P -> Q is True. Assess whether the following statement is logically correct or logically flawed. You have a good job, so you learned the basics of computers. Logically correct Logically flawed (it is trying to claim q therefore p) You do not have a good job so you did not learn the basics of computers. Logically correct (not q therefore not p) Logically flawed You did not learn the basics of computers so you do not have a good job. Logically correct Logically flawed (it is trying to claim not p therefore not q) Part IV 4.1 Look carefully at the logical circuit below, and complete the table. Remember: an input of 0 means switch off and no current flows, while an input of one means switch on and current flows.  Input AInput BOutput111101011000 4.2 What type of gate this is? ___________OR gate (1 if A or B) _______________ Part V The table below lists on the left devices that can be found inside a computer. For each of these devices, give their purpose (center column), and list in the right column what could happen if they would stop working. DevicePurposePossible problemBus between the CPU and RAM Transport electronic signals from the Central Processing Unit (which executes all the commands) to the Random Access Memory where data to be operated upon is stored. Would not be able to get any new data to the CPU (only the data in cache would be accessible). Power supply Provides the electrical energy necessary for all components of the computer to operate.The computer would shut down and not operate. 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