INPUT ARTICLE: Article: If your keyboard is part of your laptop, shut down the laptop before you begin cleaning. This will help prevent damage from occurring during the cleaning process. If the keyboard is part of your laptop, unplug the laptop entirely. Otherwise, disconnect the keyboard from your computer, laptop, or tablet. First, carry your keyboard over to a trashcan and tip it upside down. Gently shake and move it side to side to dislodge any loose dirt or objects. Run your hand gently over the keys to loosen dirt that may be stuck. First, turn the keyboard at a 75 degree angle, so it is not quite vertical. Then, spray some compressed air left to right across the surface of the keyboard. Keep the straw of the air compression can about inch away from the keys. After spraying the whole keyboard, rotate it 90 degrees to one side, and spray all keys again from left to right. Repeat this until you have sprayed the keyboard at all angles. Apple doesn't recommend the use of compressed air for all keyboards, as it may push particles further into the the keyboard. This step is specifically for MacBook laptops from early 2015 or later. Get the cloth damp, and then ring out any excess moisture before touching your keyboard with it. Run the cloth gently over the surface of the keys to remove dust and dirt. Be sure that you don't get any excess moisture in between the keys in this process. For stains on your keys or keyboard, use a bit of pressure to scrub them off. Get the cotton swab or cloth slightly damp, and then apply it to the stain. You can rub in a circular motion, gently, until the stain is gone. If you have a white keyboard, take extra time to scrub the dark brown areas that tend to develop on the spacebar and where your fingers rest. Consider using a microfiber cloth for this step. Run it over the keyboard to remove any remaining moisture or dust that may have collected.

SUMMARY: Shut down your laptop. Unplug your keyboard from its power source. Shake excess dirt and crumbs into a trashcan or sink. Spray compressed air into the keyboard of a MacBook (early 2015 or later). Run a damp, soft, lint-free cloth over the surface of the keyboard. Remove stains using a damp cotton swab or a damp lint-free cloth. Dry the keyboard with a dry, clean, soft, lint-free cloth.

In one sentence, describe what the following article is about: A humidifier is a machine that produces a mist or steam, increasing the humidity or moisture in the air. The moisture in the air keeps your mucus loose, making it easier for air to get through your nasal passages as you sleep. The noise created by a humidifier might keep you awake, though, so look for a quiet machine. If you're buying a new one, look for online reviews to get an idea of whether it is noisy. Try keeping the humidifier just outside your bedroom door; this way, you'll still have some moisture in the air, and the noise will be reduced. Extreme temperatures either hot or cold will keep you from getting a good night's sleep. Your brain, which regulates your body temperature without you even thinking about it, tries to achieve different internal temperatures when you are awake versus when you're asleep. Reducing the external temperature slightly will help your body gear down for rest. The ideal temperature for sleep is 68F (20C). Though you may think that reading a book or watching TV will help you get to sleep, the light from both of those activities will actually keep you awake longer. When your eyes take in and process light, the nervous system stimulates the parts of the brain that control hormones and body temperature. When this happens, your body chemistry stays wired up for consciousness, and you'll find it more difficult to fall asleep. When it's time to go to bed, turn off all light sources and cover up any technology that may have blinking lights that will keep your brain engaged. Stop using all electronic devices including phones, tablets, and laptops at least 30 minutes before bed, if not a few hours, as the blue light emitted from the screens will keep you awake. If someone else in your home is listening to music or watching TV with the volume up high, ask them to turn down the volume enough to keep you from hearing it in your bedroom. The less distractions you have, the better chance you'll have of getting to sleep.
Summary: Run a humidifier in your bedroom at night. Set the thermostat to a moderate temperature, but on the cool side. Keep a dark bedroom at night. Maintain a quiet, soothing environment.

INPUT ARTICLE: Article: In CIDR, you have a IP address followed by bit-length prefix separated by slash(/). Now you can start to convert bit-length prefix to quad-dotted by separating the bit-length prefix in increments of 8 and adding the final bit number. Example: If the bit-length prefix is 27, then write it as 8 + 8 + 8 + 3 . Example: If bit-length prefix is 12, then write it as 8 + 4 + 0 + 0 . Example: Default bit-length prefix is 32, then write it as 8 + 8 + 8 + 8. The total number of bits is represented using the following equation: Tb = 8. Subnet masks can be 0, 128, 192, 224, 240, 248, 252, 254 and 255. The table above gives you the Number of bits used for subnetting (n) to their corresponding subnet mask. For subnet mask 255 is default, so it'll not consider for subnet masking. From the previous step, you got IP address = 170.1.0.0 and Sub-net mask = 255.255.255.192 Total bits = Tb = 8 Number of bits used for subnetting = n. As the subnet mask = 192, its corresponding number of bits used for Subnetting is 2 from above table. The Number of subnets is 2n. In our example, the number of subnets = 22 = 4. The total number of subnets is 4. This is represented with the formula () = 2m. In our example, the value of last bit used for subnet masking = = 26 = 64. The value of the last bit used for subnet masking is 64. The number of hosts per subnet is 2m - 2. Now you can find previously calculated number of subnets by separating subnets each having the value of last bit used for subnet masking or . In our example, the last value used for subnet masking is 64. This produces 4 subnets with 64 addresses. Our example IP is 170.1.0.0. This falls in the 170.1.0.0 - 170.1.0.63 subnet.

SUMMARY:
Write the bit-length prefix in bit format. Determine the total number of bits. Determine the number of bits used for subnetting. Calculate the number of subnets. Calculate the value of last bit used for subnet masking. Calculate the number of hosts per subnet. Separate the subnets by the value of the last bit used for subnet masking. Find which subnet your IP address is in.