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HP Notebook - 15-ac168tu. Microprocessor. Intel® Pentium® N3825U with Intel® HD Graphics (1.9 GHz, 2 MB cache, 2 cores) Memory, standard. 4 GB DDR3L SDRAM (1 x 4 GB) Video Graphics. Intel HD Graphics. Hard Drive. 500 GB 5400 rpm SATA.
Apr 08, 2016 · The HP Notebook 15-ac121nr is a fairly affordable 15-inch notebook with big aspirations. It has a sharp 1080p display for enjoying flicks and photos, a big 1TB hard drive for all of your files and ...
PowrReverser 16F/16R and 32F/16R Hi-Lo transmission options Choose climate-controlled cab or open station Hitch lift capacity of 5,150 lbs. with an option of 5,950 lbs.
The 8R engine has a closed chamber head vs the open chamber of the 18R-C. The 8R-B has dual side draft SU-type Aisan carburettors with the float bowl under the body and vacuum activated power valves with strangle plates for chokes and liquid cooled intake with a balance tube.
A popular modification to the early 22R is to use a 20R head. Unlike popular lore, the 20R head does not have smaller combustion chambers. The misunderstanding originated when the 22R came out and an advantage was its higher compression ratio, so swapping a 20R block with a 22R, there was a compression increase. The 20R head has straight ports, so can flow better than the 22R head, improving high RPM power. The 20R head is a simple bolt-on modification for the pre-1985 block, but also requires the use of the 20R intake manifold, making it almost impossible (there's a lot of matching necessary) to use with the 22R-E EFI system. For blocks 1985 and onwards, further modifications are required.
These had 4-valve heads and were called 152E, they were of 89 mm × 80 mm (3.50 in × 3.15 in) bore and stroke and 1,995 or 1,998 cc (121.7 or 121.9 cu in) (depending on the source). The Group 4 rally version of the 152E had two twin-choke carburettors, and developed 240 PS (177 kW; 237 hp) at 9000 rpm. Higher tuned engines developed as much as 300 PS (221 kW; 296 hp) at 9,200 rpm. German racing team Schnitzer also developed a turbocharged silhouette racing version of the Celica, to take on the Porsche 935. With a KKK turbocharger, the Group 5 Celica developed 560 PS (412 kW; 552 hp) but reliability was less than satisfactory.
2R. The 1.5 L (1,490 cc) 2R family was produced from 1964 through 1971. It is a square engine, with bore and stroke of 78 mm (3.07 in). Again, an LPG version, the 2R-LPG, was produced alongside the gasoline version. Production had been gradually transferred from the original Honsha plant to the new Toyota Kamigo plant in 1968.
The twin cam 1.9 L (1,858 cc) 10R was produced from 1967 through Feb 1971, when it was renamed the 8R-G. The later 8R-G version did not receive a timing chain tensioner in an effort to make it more silent.
The 7R was similar in displacement and technology to the 4R except the wider 86 mm (3.39 in) bore and shorter 68.5 mm (2.70 in) stroke of the 7R gave different power characteristics.
The R engine was the Toyota engine used in the 1958 Toyota Crown, the first model to be exported to the United States. Road & Track was unimpressed with the engine on its introduction, noting that it idled quietly but was "not capable of very high revolutions per minute.". Code. Power.
The HP Notebook 15-ac121nr is made of plastic, but it's still an attractive device. The laptop's lid features HP's logo in black on a silver, diamond-textured pattern that strikes a handsome modern profile. Opening the lid reveals a silver deck with a subtle crosshatch design (it comes in other colors, including red, blue, white and purple); a black, Chiclet-style keyboard; and a 1080p display surrounded by a chunky, black bezel.
The $649 laptop falls flat in a couple of areas, but overall, it's a good value.
On the Laptop Mag Battery Test, which involves continuously surfing the web over Wi-Fi at 100 nits of brightness, the Notebook 15 lasted 5 hours and 51 minutes. That's 6 minutes longer than the category average. The Dell Inspiron 15 5000 lasts longer, at 6:22, but both the Asus F555LA (5:44) and the Toshiba Satellite L55-C5340 (5:14) fell short.
The Notebook 15 showed some muscle on our spreadsheet test, in which it paired 20,000 names and addresses in 4 minutes and 30 seconds -- 45 seconds faster than the category average. The Dell Inspiron 15's score was identical to the Notebook 15's. The Satellite L55-C5340 took 5:10, and the Asus F555LA was sluggish, at 6:31.
In Geekbench 3, a synthetic test that measures CPU performance, the HP Notebook 15 scored 5,784. The Dell Inspiron 15 5000 with identical specs achieved a score of 6,331, while the Toshiba Satellite (2.2-GHz Core i5-5200U CPU and 8GB of RAM) earned a lower mark of 5,564. The Core i3-powered Asus F555L fell predictably behind the pack, with a score of 2,080.
And at 220 nits, the Notebook 15's screen wasn't the brightest, either. (The average for mainstream notebooks is 250 nits.) I found myself cranking up the brightness as far as it would go. The Inspiron 15 5000 fared better, at 239 nits, but both the F555LA and the Satellite were dimmer, falling below 200 nits.
At 4.8 pounds and 15.1 x 10 x 0.96 inches, the Notebook 15 is not the most portable machine, but it's light enough to take with you. The Toshiba Satellite L55-C5340, the Asus F555LA and the Dell Inspiron 15 5000 are all similar in size. The Satellite L55-C5340 and the F555LA are of similar weight, at 4.8 pounds and 4.6 pounds, respectively. However, at 5.4 pounds, the Inspiron is much heftier.
By contrast, when the HP-15C entered Complex mode, it consumed 5 storage registers, using four to add imaginary components to each level of the stack and one to add the imaginary component to Last X.
A first on the HP-15C was built-in support for complex numbers. Programs for manipulating complex numbers existed as far back as the HP-65. To use these programs, the user entered two numbers into two stack positions and invoked the appropriate subroutine. This was cumbersome because it turned a four-level stack into a two-level stack ...
Matrix math was another first on the HP-15C. The calculator could work with up to 5 matrices named A-E. Matrices were dimensioned with the DIM command. For example, to define B as a 2 by 1 matrix, the user would press 2 ENTER 1 f DIM B.
The HP-15C had 448 bytes which were shared between programs and storage registers. One or two bytes were used for each instruction stored in a program and the maximum number of registers was 67. Initially the HP-15C had 322 bytes of program space and 21 directly addressable registers (R0-R.9 and the index register RI.)
The HP-16C Computer Scientist is a programmable pocket calculator that was produced by Hewlett-Packard between 1982 and 1989. It was specifically designed for use by computer programmers, to assist in debugging. It is a member of the HP Voyager series of programmable calculators.
The calculator uses the proprietary HP Nut processor produced in a sili con on sapphire process and featured continuous memory, whereby the contents of memory are preserved while the calculator is turned off. Though commonplace now, this was still notable in the early 1980s, and is the origin of the "C" in the model name.
The 16C can display integers in hexadecimal, decimal, octal and binary, and convert numbers from one number base to another. It also deals with floating-point decimal numbers. To accommodate long integers, the display can be 'windowed' by shifting it left and right. For consistency with the computer the programmer is working with, the word size can be set to different values from 1 to 64 bits. Binary-arithmetic operations can be performed as unsigned, one's complement, or two's complement operations. This allows the calculator to emulate the programmer's computer. A number of specialized functions are provided to assist the programmer, including left- and right- shifting, rotating, masking, and bitwise logical operations.
Like many other vintage HP calculators, the HP-16C is now highly sought-after by collectors. Several emulators are available for desktop computers, web browsers, smartphones and other calculators.
Appropriately for a programmer's calculator, the 16C, like all other members of the Voyager series, is itself programmable. Keystroke programming is used. Up to 203 program steps are available, and up to 16 program/step labels. Each step and label uses one byte, which consumes register space in 7 byte increments. Here is a sample program that computes the factorial of an integer number from 2 to 69. The program takes up 9 bytes. The codes displayed while entering the program generally correspond to the keypad row/column coordinates of the keys pressed.