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Sexsmith, Joseph R. "A Fresh Start: Improving Marcom Effectiveness" (2006) New Paradigm Learning Corporation; Powell, Guy R., Marketing Calculator: Measure and manage your return on marketing investment (2008) John Wiley and Sons. ISBN 978-0-470-82395-8
New plants and equipment, inventories, and accounts receivable are three of the main categories of investments that can be affected by marketing decisions. [ 3 ] RoA, RoNA, RoC, and RoIC, in particular, are similar measures with variations on how ' investment ' is defined.
By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first handheld calculator was a 1967 prototype called Cal Tech, whose development was led by Jack Kilby at Texas Instruments in a research project to produce a portable calculator. It could add ...
The return, or the holding period return, can be calculated over a single period.The single period may last any length of time. The overall period may, however, instead be divided into contiguous subperiods. This means that there is more than one time period, each sub-period beginning at the point in time where the previous one ended. In such a case, where there are
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The HP-20S (F1890A) is an algebraic programmable scientific calculator produced by Hewlett-Packard from 1987 to 2000.. A member of HP's Pioneer series, the 20S was a low cost model targeted at students, using the same hardware as the HP-10B business calculator.
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The original TI-30. The TI-30 is a scientific calculator manufactured by Texas Instruments, the first model of which was introduced in 1976.While the original TI-30 was discontinued in 1983 after several design revisions, TI maintains the TI-30 designation as a branding for its low and mid-range scientific calculators.