CCCalc – desktop check-n-correct calculator

http://cccalc.excelsior-usa.com/en/cccalc-features.html

CCCalc is a freeware calculator that combines ease of use of desktop check-n-correct calculator and power of spreadsheet applications.

It performs four basic arithmetic operations: plus, minus, multiply and divide. It also provides full set of percent calculations as most of desktop calculators, simply add "%" symbol to the end of an appropriate number.

All calculations are performed in a true decimal form, that means that you will get exactly the same results as if you calculate with a paper and pencil. It also provides unlimited precision so you can use hundreds of digits in your numbers if you need so.

To simplify complicated calculations CCCalc features full set of operations with memory. You may not only add or subtract but also multiply or divide memory with a given number. Number of memory slots is practically unlimited and they are visible and even editable.

User interface of CCCalc makes its use very convenient. It displays many lines of calculations to help you to navigate in a complicated formula or to find a misprint if any. It automatically stores all calculations until you delete them yourself. It allows to browse through the whole calculations history and easily correct errors or reuse numbers and expressions. You may also exchange data with other Windows applications via clipboard or mouse drag-drop.

Partition Saving – backup restore Hard Drive partition

http://www.partition-saving.com/

The goal of this program is to achieve saving, restoring and copying of elements of storage device. An element can be a whole hard disk, a floppy disk, the Master Boot Record (first sector of hard disk containing boot code), the partitions table or a partitions. This permits saving hard disk contents to restore it later in case of a problem, without losing time reinstalling and reconfiguring software.
This program allows running the following tasks:

    * saving an element (hard disk, partition, floppy disk, device).
    * restoring an element that was saved before.
    * copying an element.
    * copying a backup file created by this program, modifying its size or compression rate.
    * verifying created files.
    * updating partition definition in Windows 2000/XP/Vista registry.
    * updating BOOTSECT.DOS/BOOTSECT.BAK file.
    * exploring a partition.
    * simulating elements with created files.
    * creating files on a NTFS drive under Windows for use in saving.
    * cancelling bad sectors information of a filesystem.
    * correcting disk physical definition (first sector number of a partition, heads and sectors per track numbers) into a FAT and NTFS boot sector.
    * replacing a FAT or NTFS boot sector or ext2/ext3 superblock by its copy in case original one is damaged.