Aurora HC101X Dual Power Angled for Desktop Use 8 Digit Handheld Calculator

• 8 Digit LCD display
• Dual Power: Solar and Battery
• Auto Power Off
• Oversized characters on keys
• Change sign key (+/-) and Square root key

Aurora Dual Power, 8 Digit Handheld Style Calculator Angled for Desktop Use. Easy to Read Oversized Character on Keys.

List Price: $ 3.99

Our Price: $ 3.99

Click For More Info About Aurora HC101X Dual Power Angled for Desktop Use 8 Digit Handheld Calculator

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Texas Instruments BA II Plus Financial Calculator

• Performs common math as well as various financial functions
• Worksheet mode includes tables for amortization, bond, depreciation, and compound interest
• Built-in memory for storage of previous worksheets
• Can perform cash-flow analysis and advanced list-based statistics
• Slide-case included to protect screen

Texas Instruments BA II plus Financial Calculator for business professionals and students features are that it performs common math as well as various financial functions; the Worksheet mode includes tables for amortization, bond, depreciation, and compound interest, Built-in memory for storage of previous worksheets, Can perform cash-flow analysis and advanced list-based statistics and a Slide-case included to protect screen.We're definitely taking this along with us the next time we shop for a house. Though it takes a little effort to master the collection of financial worksheets available on the Texas Instruments BA II Plus, you'll be glad you invested the time and money in this fine financial calculator.The BA II Plus operates in standard calculator and worksheet modes. The standard mode lets you perform common math as well as operations involving the time value of money--that is, applications such as mortgages or annuities in which payments are equal and evenly spaced. You can als

List Price: $ 45.00

Our Price: $ 26.99

Click For More Info About Texas Instruments BA II Plus Financial Calculator

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Texas Instruments TI-30XS MultiView Scientific Calculator TI30XSMV Calculators

List Price: $ 17.99

Our Price: $ 13.13

Click For More Info About TI-30XS Multiview Calculator

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Pregnancy due date calculator - are they accurate ?

are generally considered accurate within 7 days. Typically, most practitioners don't adjust due dates in either direction if the discrepancy between the two possible dates is less than 7 days. And that's true even of early ultrasounds.

There are generally two ways of measuring a pregnancy,  LMP (last menstrual period) and gestational.  Most due date calculators go by LMP, which calculates a pregnancy at 40 weeks or 10 lunar (4 week) months. LMP would mean that ovulation took place in your 2nd week of pregnancy (day 14). Gestational starts from the date of ovulation resulting in a 38 week pregnancy. So if you know the date of ovulation you can calculate where you are by either LMP or gestational.

The ultrasound technology may give you an odd date because they may not use either of these; they sometimes take the rate of development and change the due date based on where on their scale the baby is.  The Doctor may even move the due date based on this, even if you know absolutely when the baby was conceived!

Babies only have so much possible size variability throughout pregnancy and so most will be of a certain size at a certain point in the pregnancy. The later in the pregnancy you are the more individual variability among babies there is and so the less accurate the size and date estimate will be. However, for example, almost all babies will be 2 inches at 13 weeks (LMP) and each little bit bigger than that they are, an extra day would get tacked on to an ultrasound estimate.

The solution is to calculate the pregnancy due date and then, unless there are complications be ready early but figure on going late. Many people have their hearts set on their due date and are so ready on their due date that when it goes by and nothing.  They get pretty upset.

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Sharp EL-377TB 10-Digit with Punctuation Twin Power/Glass Top Design Calculator

• 10-digit LCD display with punctuation.
• Automatically switches from solar cells to battery power in low light.
• Include percentage, constant calculation, and auto power off feature.
• Includes memory plus, memory minus and recall/clear memory keys.
• Easy tax calculations.

A great all purpose calculator the EL-377TB can do all of your basic functions as well as calculate taxes. The calculator also switches between battery power and solar power on its own.

List Price: $ 8.99

Our Price: $ 4.55

Click For More Info About Sharp EL-377TB 10-Digit with Punctuation Twin Power/Glass Top Design Calculator

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