e vs XEQ41

Scan, convert and protect your documents, right on your iPhone or iPad. No ads. No watermarks. No sign-in. No scan limit. EASY - SMART SCAN - Auto-capture: hold your phone over a page; the app finds the edges and takes the shot. Prefer to tap the shutter yourself? Switch to manual capture anytime. - Auto-align: perspective is corrected and the page is cropped for you, then your default filter is applied (Magic Color unless you choose another in Settings). - Precise cropping: drag a corner or a whole edge, with a magnifier. - Six filters: Original, Magic Color, Black & White, Grayscale, Sharpen and Denoise, for one page or every page at once. - Rotate pages, import from Photos or Files, send photos, PDFs or Word files from other apps into e-Scanner, and share through the iOS share sheet: Mail, messaging apps or Save to Files. EFFICIENT - ADVANCED OCR - On-device text recognition with Apple Vision, in English, Vietnamese, Japanese and Chinese. - Extract text on your device from the camera or any document in your library, free and offline. - PDF to Word keeps tables and math formulas as editable content. - Content search: find words inside your documents, Word files included, not just in file names. Search runs on your device. EFFICIENT - PDF TOOLKIT - 14 tools: merge, split, reorder & delete pages, rotate, compress, watermark, lock, unlock, images to PDF, convert to JPG, Word to PDF, PDF to Word, extract text and ID card (front and back on one A4 page). - Sign: draw your signature or pick it from a photo, then place it on any page of a PDF. - Blur: hide account numbers, addresses or faces on a page and save the result as a new document. - Open Word files inside the app, and print wirelessly. ENCRYPTED - YOUR DOCUMENTS STAY YOURS - Contracts, bank statements, ID cards: scans, PDFs and document names are encrypted with AES-256 where they are stored, on your device. - Files use iOS data protection and are excluded from iCloud and device backups. - Lock the app with Face ID, Touch ID or a PIN, and put a password on important PDFs. - Scanning, editing, search and export all work offline. CLEAR ABOUT THE CLOUD Server processing is off by default. Only two tools use it: PDF to Word and Word to PDF. They stay off until you turn on Advanced OCR in Settings and accept the data notice. Everything else runs on your device. PREMIUM The free version is complete: no ads, no watermarks, unlimited scanning and every tool. Premium adds: - Advanced OCR: 150 pages a month (up to 30 a day) instead of 10 a month - Merge PDF: unlimited files instead of 3 at a time - Images to PDF: unlimited images instead of 5 per PDF - Word to PDF: unlimited instead of 20 a day - Blur: unlimited instead of 10 free uses - Content search: free users see which documents and pages match; Premium opens a result at the matching page, shows snippets, and searches inside scanned documents - Lock and unlock PDFs with a password SUBSCRIPTION INFORMATION e-Scanner Premium is an auto-renewing subscription, monthly or yearly. The price in your currency is shown in the app before you buy. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period, and the renewal is charged within 24 hours before that. You can manage or cancel it in your Apple Account settings after purchase. Terms of Use: https://escanner.pbsolutions.io/en/terms/ Privacy Policy: https://escanner.pbsolutions.io/en/privacy/

XEQ41 is a hand-written emulator of a 1983 programmable RPN calculator, running the original manufacturer's microcode on a simulated NUT processor. It is not a re-implementation of the machine's behaviour — it is a simulation of its processor, so the calculator on screen executes the same instructions the hardware executed, and does what the hardware did for the same reasons. THE DETAILS THAT GET TESTED • Hold a key too long and the microcode itself cancels the function and prints NULL. That is 7,100 instructions — 1.23 seconds at original speed. Nobody wrote a timer; the ROM does it, and it stays 1.23 seconds when you run the machine faster. • BEEP is four tones, not three: 578, 361, 722 and 578 Hz, because the microcode falls through into a fourth. The test was written expecting three and the machine corrected it. • The display is modelled as a liquid crystal panel rather than sampled as a register, so the half-built strings the hardware never showed stay hidden and the 174 ms blink it does intend does not. • Continuous memory. Close it, force-quit it, come back next week — it is where you left it. • Shift-ON puts up a running clock, exactly as the manual says. THE FACEPLATE IS DRAWN, NOT PHOTOGRAPHED Thirty-nine moving key caps, the glass and the annunciator row are all vector, generated from a measured coordinate table — sharp at any size, with no image assets anywhere. A key going down travels, closes the shadow beneath it and darkens. The fourteen-segment display face is ours outright, drawn from our own segment table, so no third-party font ships. Every key is an accessibility element whose label is composed from the printed legend, so VoiceOver says "x squared" where the plate prints x². WHAT IS IN IT • FOCAL programming, with program files in and out through Files • Extended Memory, with real file structure • Four ports for plug-in module images you supply • The 82143A thermal printer and its paper tape, once you supply its ROM image • Synthetic programming — the byte grabber runs • Saved machines that record what was plugged in and refuse to open as something else • Alarms, the clock, BEEP and TONE, LCD contrast, haptics • Fifty transcribed keyboard overlay cards • Three faceplate palettes, and an optional extra display for the stack or the machine's status • Seven FOCAL programs written for this app, free to use and modify HOW IT IS CHECKED Thirteen scripted scenarios run byte-identical against a second, independent implementation of the same processor. Six programs from printed sources reproduce their published answers, including a polynomial fit and a singular linear system whose correct answer is the degenerate one. All thirty coordinates of a published planetary ephemeris match to the seven digits the display carries. 673 tests. PRIVACY There is no networking code in the app at all. No account, no analytics, no advertising, no tracking, nothing collected. Everything stays in the app's own storage on your device. WHAT IT IS NOT It is not a general-purpose calculator — it is one specific machine, and if you have never wanted that machine it has nothing to offer over the one already on your phone. Third-party module images — the printer's ROM among them — are yours to import, not ours to distribute. COMPATIBILITY XEQ41 is functionally equivalent to the HP-41CX. XEQ41 is not affiliated with, authorized by, endorsed by, or sponsored by Hewlett-Packard. HP, Hewlett-Packard and HP-41 are trademarks of their respective owners.