Holter monitor
device · 1962 · Digital age
Recording an ECG over 24 hours (Holter).
Inventor: Norman Holter.
What it is made of
- Flash memory — has part. Recording.
- Microcontroller — has part. A microcontroller does the recording.
Principles and materials it uses
- Plastic — is made of. The case is plastic.
History: what it evolved from and what it influenced
- Electrocardiograph — evolved from. A wearable ECG.