The GHM-ONE is based on a powerful processor which, in combination with a relay card and mains adapter card, serves as the base unit. The base unit can be adapted to applications with a communications card and up to two I/O cards. The number of physical inputs and outputs can be expanded with external I/Oâs. This modular layout enables
Some practitioners routinely recommend an ultrasound at 6 to 9 weeks to confirm and date the pregnancy, but others will only do one if they have reason to suspect any of the following:
1 You may have gone to your doctor with vaginal bleeding or you may be anxious because of problems in a previous pregnancy (such as miscarriage). 2  This ultrasound can routinely detect a heartbeat in your baby as early as 6-7 weeks. 3  Confirming the correct dates of your pregnancy.