Disease Categories. Electrical: Abnormal heart rhythms (arrhythmias) are caused by problems with the electrical system that regulates the steady heartbeat. The heart rate may be too slow or too fast; it may stay steady or become chaotic (irregular and disorganized).lectrical: Abnormal heart rhythms (arrhythmias) are caused by problems with the electrical system that regulates the steady heartbeat. The heart rate may be too slow or too fast; it may stay steady or become chaotic (irregular and disorganized).
Typing on a Computer Keyboard. For some students, learning to type on a computer can be as difficult a task as learning to write with a pencil. Students with good fine motor skills are often better at mastering this particular skill. Typing requires coordinating finger movements and memory skills. A student must first remember where the letters, numbers, and symbols are located on the keyboard.
Find it out with our free typing speed test. If you don't know how to type using all your fingers without looking at the keyboard, we recommend you our free online typing course to improve your typing speed. After completing the test you can download a certificate showing your test results. If you are among the fastest typists, you will join our fastest typists ranking. If you make an error while typing, the cursor will stop until you type the right key. Do not use the backspace, simply retype the character. Time does not begin until you press the first key.