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Part, 74LS Category. Description, Octal D-type Transparent Latches AND Edge-triggered Flip-flops. Company, Texas Instruments, Inc. Datasheet, Download. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, 3-STATE Octal D-Type Transparent Latches and. Part Number: 74LS, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor.

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Embedded Hardware – Part B: Confirm the operation using the simulator to make sure you got it right, which you need document only by saying “checked with simulator” in your hand-in. We suggest each of the two students in your lab group be “in charge” of one of the two parts of the lab parts to help divide the work. The point of this exercise is to actually follow all the steps on the checklist, not just say you followed them.

When ratasheet record your answers, use the conventions described in the discussion section. All non-code parts of the hand-in should xatasheet submitted as a single document.

Do this by hand using the reference materials. Paste a copy of the pre-lab portion of the Lab Writeup Checklist into your hand-in materials. Look carefully at the data sheet!

Demonstrate that you can read and understand the datasheet for an IC and use it in a circuit. Limit your answer to 40 words. Assume datashete all setup, hold, pulse duration, and propagation times are valid and the outputs have settled for these sample points.


For this lab, you will adapt the string hash program from lab 1. Why is datashedt valid or invalid? Circuit Output Connections In the resistor network, each resistor is Ohms.


To familiarize you with the operation of the LS flip-flop and understand how it can be integrated into a circuit. For example, if Q7 is high, and Q6: This lab uses the same circuit as Lab 2 part A. Pick an instruction where the exact execution time differs from the best case execution time and explain why in one sentence. BUT, we expect both of you to understand and participate in the execution of both labs.

Assume that the output voltage is quiescent i. Refer above for details on wiring the circuit. Create a similar example using different, non-trivial e.

74LS Datasheet Fairchild Semiconductor pdf data sheet FREE from

You will connect the circuit and write a simple program to verify its operation. This includes performing operations shift, add, subtract, clear on registers and memory locations and copying values from one location to another.

Machine code is fetched from memory and the instructions described are executed by the processor. Do this by hand — do NOT use the simulator since it will give exact execution time and not best case execution time.

Briefly comment each line to describe what it does 10 words or fewer per line. Scan the printed-out document after you add the checkmarks and upload to the hand-in folder. Pin 2 provides D0 to bus, Pin 5 provides D1, etc. Code files should be submitted separately, per the lab FAQ. For branch instructions, insert labels at the appropriate locations and use the label values in your disassembled assembly code.


Also, see the course materials repository page. Please see the course web page for due dates. For the questions in part B. Assume the voltage drop across the LED is 1. For this lab, you will write a program that uses a loop datssheet add the numbers 1 through and displays the results.

Put a brief comment at the beginning which describes the overall function of the code. And, as always, you must do the pre-labs independently. The term counter limit refers to the maximum value the counter runs to e. Paste a copy of the lab portion of the Lab Writeup Checklist into your hand-in materials.

The first instruction is done as an example. For each question below, we suggest that you do the work by hand and check it with an assembler. This lab uses a flip-flop to hold a data value on a bar graph LED. It is OK to use CodeWarrior to check your work and make corrections after you have done it by hand. Your program shall meet the following requirements: You do not have to use the assembly program or the simulator.