A digital thermometer is an electronic device used to measure body temperature accurately. Unlike traditional mercury thermometers, it uses a sensor (thermistor or infrared sensor) to detect temperature and display it on a digital screen.
Key features:
Digital display: Shows the temperature in numbers, usually in Celsius (°C) or Fahrenheit (°F).
Sensor tip: Measures heat from the body, mouth, ear, or forehead.
Memory function: Some models can store previous readings.
Alert system: Often beeps when the measurement is complete.
Battery-powered: Usually lightweight and portable.
Advantages:
Safe (no mercury)
Fast readings (usually 10–60 seconds)
Easy to read
Can be used orally, rectally, or under the arm (axillary)
Here’s a step-by-step guide:
Wash your hands.
Clean the thermometer tip with rubbing alcohol or warm soapy water, then rinse with cool water.
Make sure the thermometer is turned off before starting.
Oral use:
Place the thermometer tip under the tongue.
Close your mouth gently.
Wait until the thermometer beeps.
Remove and read the temperature on the display.
Axillary (underarm) use:
Place the thermometer under the armpit.
Close the arm against the body.
Wait for the beep, then read the temperature.
Rectal use (for infants or when precise reading is needed):
Apply a small amount of petroleum jelly to the tip.
Insert gently into the rectum (1–2 cm).
Wait for the beep, then read the display.
Ear/forehead use (if using infrared digital thermometers):
Follow the manufacturer’s instructions carefully.
Place the probe in the ear canal or on the forehead.
Wait for the beep and read the temperature.
Clean the tip with alcohol or soap and water.
Turn off the thermometer.
Store it in a safe, dry plac
