The number of logical processors (processors that the operating system and applications can work with) is (usually) greater or equal to the number of physical processors (actual processors on the motherboard). For example, a hyperthreaded processor with 4 physical processors will have 8 logical processors.
Usually, during the initial 6-months of pregnancy (that is 1 st & 2 nd trimesters), you will not have the need to consume more calories. This is usually about 2000-calories per day. On the other hand, the last 3 months of pregnancy (that is 3 rd trimester), you need additional 200 to 300-calories, which makes it to 2200 to 2300-calories per day.
Pregnancy Calorie Calculator. During pregnancy, the American Pregnancy Association recommends an additional 300 calories per day during the second and third trimesters. This calculator is just an estimate. If you are gaining weight too quickly, simply lower your calorie intake by 50-100 calories per day for one week at a time. Alternatively, if you are not gaining enough weight, you can add in 50-100 calories per day. Read here my thoughts on REAL healthy weight gain during pregnancy.