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In software development, effort estimation is the process of predicting the most realistic amount of effort (expressed in terms of person-hours or money) required to develop or maintain software based on incomplete, uncertain and noisy input.
Construction cost estimating software is computer software designed for contractors to estimate construction costs for a specific project. A cost estimator will typically use estimating software to estimate their bid price for a project, which will ultimately become part of a resulting construction contract.
VisiCalc ("visible calculator") [1] is the first spreadsheet computer program for personal computers, [2] originally released for the Apple II by VisiCorp on October 17, 1979. [1] [3] It is considered the killer application for the Apple II, [4] turning the microcomputer from a hobby for computer enthusiasts into a serious business tool, and then prompting IBM to introduce the IBM PC two years ...
For instance, bread costs $4.27 in the metro Washington, D.C. area but only $3.76 in Indianapolis. Using a cost of living calculator allows you to view specific costs that matter to you — for ...
8 KB of RAM (7 KB user accessible) 64×48 pixels 16×8 characters 6.4 × 3.0 × 0.9 [4] No 1995 Unknown Allowed Allowed TI-81: Zilog Z80 @ 2 MHz 8 KB of RAM (2.4 KB user accessible) 96×64 pixels 16×8 characters 6.75 x 3.125 x 1.0: No 1990 110 Allowed Allowed TI-82: Zilog Z80 @ 6 MHz 28 KB of RAM 96×64 pixels 16×8 characters 6.9 × 3.4 × 1. ...
8-bit RPL character set [12] Buzzer HP SIR, 2×5-pin RS-232: 3×1.5 V (4.5 V) AAA: 1995 None HP 39G, HP 40G: HP-28S: 1 MHz Lewis (Saturn 1LT8 core) 32 KB RAM, not flashable 4-line (137×32 pixel) monochrome LCD Entry RPN: Dynamic: RPL: Rudimentary [8] 8-bit HP Roman 8 variant [13] [14] [15] Buzzer HP SIR: 3×1.5 V (4.5 V) N: 1988–1992 HP-28C ...
1983, Lotus 1-2-3 for MS-DOS, the first killer application for the IBM PC, it took the market from Visicalc in the early 1980s. 1983, Dynacalc for OS-9 a Unix-like operating system, similar to VisiCalc. [11] 1984, Lotus Symphony for MS-DOS, the follow-on to Lotus 1-2-3; 1985, Boeing Calc for MVS and MS-DOS, written by subsidiary of aviation ...
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