Learning Stones

  OBJECTIVE GENERAL KNOWLEDGE - COMPUTER AWARENESS If 4 in binary system is 100 , then 8 will be : 111 100 1000 10 High voltage level of a digital signal in positive logic is : 0 1 either 0 or 1 none of these Boolean expression for NAND gate is : Y=A+B Y=AB Y=A A=A Octal 6 is equals to decimal : 14 15 16 13 In decimal system the base or radix is : 1 0 10 none of these Which logic gate is similar to the function of two series switches? NOR OR AND NAND How many flip fops are needed for a 4 bit counter? 3 4 6 none of these Which of the following is not a high level computer programming language? COBOL FORTRAN MODEM non of these A device with slowest switching speed is : Nixie tubes LED LCD none of these The connecting leads in an IC chip are made of : Aluminium Silicon Calcium Copper A memory used for storing variable quantities is : RAM EPROM ROM PROM Which of the following is the minimum error code? Gray code Octal code Binary code none of these Which of the following is a temporary...

Corona virus Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus. Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment.  Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness. The best way to prevent and slow down transmission is be well informed about the COVID-19 virus, the disease it causes and how it spreads. Protect yourself and others from infection by washing your hands or using an alcohol based rub frequently and not touching your face.  The COVID-19 virus spreads primarily through droplets of saliva or discharge from the nose when an infected person coughs or sneezes, so it’s important that you also practice respiratory etiquette (for example, by coughing into a flexed elbow). At th...