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What is difference between preemtive and nonpreemtive sheduling?
In preemptive scheduling a given task can always be "preempted" by a higher priority task. The operating systems saves the context of the running task and restores the context of the higher priority task (context switch). When all higher priority tasks have been finished, the task resumes its execution. With non-preemptive scheduling a task always executes until it ends or when it reaches a preemption point. Hope this helps
What does a open and closed switch do?
An open switch interrupts the flow of electrical current in a circuit, preventing it from completing and thus stopping the operation of connected devices. In contrast, a closed switch allows current to flow freely, completing the circuit and enabling the devices to operate. Essentially, an open switch is like a gap in the circuit, while a closed switch acts as a bridge.
What is the difference between 'switch' statement and 'if' statement?
we can use switch statement in multiple time but in if statement we can not use multiple time
How do you find the reciprocal in a fraction?
Switch the numerator with the denominator.
How do you use a switch statement in GML?
Switch Statements are used to generate different outputs of code based on the value of an expression. Switch Statements work as follows:{randomNumber = floor(random(3))+1;switch(randomNumber) {case 1: { } break;case 2: { } break;case 3: { } break;default: { } break;}}This may seem confusing if you are new to GML, so I will give an in-depth explanation. The first line sets the variable randomNumber to a random number between 0 and 2, and adds it by 1 to make it a random number from 1-3. So far the only thing that has gone on in the code is to set a variable to either 1, 2, or 3. This is where the switch statement comes in.switch(randomNumber) {case 1: { } break;case 2: { } break;case 3: { } break;default: { } break;}this is the actual switch statement. You may be wondering what the case statements are for. case statements are always written inside switch statements and do nothing anywhere else. case statements activate when the expression in the switch statement is the same as the value that they are assigned to. Take a look at this switch statement:{rand = floor(random(3));switch(rand) {case 0: {show_message("The Random Value Was 0");} break;case 1: {show_message("The Random Value Was 1");} break;case 2: {show_message("The Random Value Was 2");} break;}} When the values assigned to the case statements are equal to the expression in the switch statement, the case statement will run the code contained in it's brackets. break statements order the switch statement to abort. The reason that you need break statements inside a switch statement is because it keeps the other cases from activating as well. (When one case statement activates, the others do as well.)A final briefing on switch statements is that they are not limited to variables. Take a look at this switch statement.{switch(obj_block.x > x) {case true: {show_message("The Block Is Ahead Of You.");} break;case false: {show_message("You Are Ahead Of The Block.");} break;}} This switch statement returns a true or false value, and the case statements operate accordingly.
How do you switch from one magnification to another magnification in a microscope and still keep the same object in you field of view?
To switch between magnifications on a microscope and keep the same object in view, first center the object in your field of view at the lower magnification. Then, without moving the slide or stage, rotate the nosepiece to change to the desired higher magnification. The object should remain centered in your field of view at the new magnification. Adjust the focus as needed.
What on the microscope allows you to switch magnification?
The objective lens turret or revolving nosepiece allows you to switch magnification on a microscope. By rotating the turret, different objective lenses with varying magnification powers can be brought into position to view the specimen at different levels of magnification.
When focusing a specimen you should always start with the?
When focusing a specimen, you should always start with the lowest magnification objective lens, typically the scanning objective (4x or 10x). This allows for a broader field of view, making it easier to locate the specimen. Once the specimen is centered and in focus at low magnification, you can then switch to higher magnification lenses for more detailed observation. Always use the coarse focus knob first, followed by the fine focus knob for precision.
What is a barlow lens on a telescope?
A Barlow lens is an accessory used in telescopes to increase the focal length, resulting in magnification of the image. It allows the telescope to achieve higher magnification without needing to switch to a higher power eyepiece. By inserting the Barlow lens between the telescope and eyepiece, it effectively doubles or triples the focal length of the telescope.
Why is it helpful for a microscope to be parfocal?
Having a parfocal microscope means that when you switch to a higher magnification lens, the specimen stays nearly in focus. This saves time by reducing the need for constant refocusing when changing magnifications, allowing for a smoother and more efficient workflow during microscopy.
How do to change the magnification of the microscope?
To change the magnification of a microscope, rotate the objective lens turret to switch to a different objective lens with a desired magnification level. You can also adjust the focus using the fine focus knob to ensure a clear image at the new magnification.
Which magnification would be most suited for scanning a slide to find a certain object?
A low magnification (e.g. 4x or 10x) would be most suited for scanning a slide to locate a specific object quickly. Once the object is located, you can then switch to a higher magnification for a closer examination.
What does it mean when a specimen is under low power magnification you can switch to high power magnification and have the specimen remain in reasonably good focus?
It means you have a good microscope.
What is a scanning objective?
What is the function of the scanning objective on the microscope? What is the function of the scanning objective on the microscope? What is the function of the scanning objective on the microscope?
What is the proper procedure for focusing the microscope?
Start by placing a slide on the stage and securing it with the stage clips. Begin with the lowest magnification objective lens and adjust the coarse focus knob to bring the specimen into view. Then, switch to the higher magnification lenses and use the fine focus knob to sharpen the image while keeping the specimen centered. Lastly, adjust the condenser and light intensity as needed for optimal visibility.
How do you examine a prepared slide using a microscope?
To examine a prepared slide using a microscope, first place the slide on the stage and secure it with the stage clips. Start with the lowest magnification objective lens, adjust the focus using the coarse adjustment knob, then fine-tune the focus with the fine adjustment knob. Once the image is in focus, you can adjust the magnification by rotating the nosepiece to switch to a higher magnification lens for detailed observation.
Why do you need to center your specimen under the lowest objective lens before switching to a higher objective lens?
Centering your specimen under the lowest objective lens ensures that the area of interest is in the field of view when you switch to a higher magnification. This minimizes the risk of losing the target area and allows for a smoother transition between objectives. Additionally, it helps maintain proper focus and avoids potential damage to the slide or the lens when adjusting for higher magnifications.
