Calculating device capable of displaying constants and method thereof

• US 7,475,100 B2
• Filed: 02/26/2003
• Issued: 01/06/2009
• Est. Priority Date: 02/26/2003
• Status: Expired due to Fees

• Current Assignee: Kinpo Electronics Incorporated (Cal-Comp Electronics Public Company Limited)
• Original Assignee: Kinpo Electronics Incorporated (Cal-Comp Electronics Public Company Limited)
• Inventors: Chuang, Chia Ting, Chen, Pei-Chih
• Primary Examiner(s): Mai; Tan V
• Application Number:
  US10/372,767
• Publication Number:
  US 20040167948A1
• Time in Patent Office: 2,141 Days
• Field of Search: 708/160
• US Class Current: 708/160
• CPC Class Codes: G06F 15/02 manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators

Abstract

A calculating device capable of displaying constants and the method thereof are proposed. A key determination unit is provided in a calculator to determine the function of the pressed key of an input unit. A constant unit database is provided for storing constant data. A constant execution unit is provided to read out the content of the constant unit database according to the determination result of the key determination unit. An output unit is also provided to display the value, unit, symbol and item number of a constant. During operation, a user can directly input the item number of a constant in a constant menu frame. Or after a user switches the page of the constant menu frame to find out a desired constant, he can then directly input the constant to display the value, unit, symbol and item number of the constant.

Claims

1. A calculating method capable of displaying constants, comprising the steps of:

(a) pressing an execution key;

(b) displaying a constant menu frame;

(c) determining whether there is an item number of a constant directly inputted,

(d) if the number is inputted, jumping to a page in the constant menu frame corresponding to the item number;

(e) if the number is not inputted, switching the page of said constant menu frame; and

(f) displaying content of said constant by pressing an ENTER key one or more times.

2. The calculating method capable of displaying constants as claimed in claim 1, wherein said constant menu frame displays a constant symbol.

3. The calculating method capable of displaying constants as claimed in claim 2, wherein the current position of said constant symbol is marked by an underline.

4. The calculating method capable of displaying constants as claimed in claim 1, wherein the content of said constant is displayed with an upper and a lower line.

5. The calculating method capable of displaying constants as claimed in claim 1, wherein the content of said constant includes a unit, a symbol, a value and an item number of said constant.