This item: CATIGA CS-121 Scientific Calculator with Graphic Functions - Multiple Modes with Intuitive Interface - Perfect for Beginner and Advanced Courses, High School or College $74.59 Get it Jul 20 - Aug 2 FREE Shipping Texas Instruments TI-30X IIS 2-Line Scientific Calculator, Black with Blue Accents $19.97 TL;DR: CS 121 is a proof-based course that requires a certain level of mathematical maturity and comfort with discrete mathematics. One good way to gain this background is via CS 20, but (especially if you took Math 23/25/55) you can also pick up these concepts via the self study program listed below. The material below is useful for CS 124 as Catiga Scientific Graphic engineering Calculator CS121 Pink 360 Functions $28.49 $29.995% off Free shipping Seller 99.9% positive Texas Instruments TI-84 Plus Graphing Calculator, 10-Digit LCD $26.00 8 bids + $5.80 shipping 7 watchers Scientific Calculator with Graphic Functions - Catiga CS229 Multiple Modes , NEW $30.00 + $5.20 shipping Clean Catiga CS-121 Scientific Calculator 360 Functions With Manual. 3 1/2"x 7". Case and manual included. Box worn do to age. Works well, door for batteries still intact. The two-line, 12-digit display on this calculator accommodates inputs and answers from 240 available functions and a replay feature to go over previous calculations. In addition to the numerous functions, this calculator allows easy unit conversions. In our analysis of 15 expert reviews, the RENUS Advanced Multi-Functional Scientific Calculator Kaeser Cs 121 ManualKaeser Cs 121 Manual Kaeser CS 121 100HP Rotary Screw Air Compressor Rebuilt Airend 3 Phase KAESER CS 121 Second Hand Air Compressors (Low Page 1/42. Kaeser Cs 121 Manualto Program Catiga Cs-121 Servis kompresor kaeser Rotary Screw Air Compressor: What are they?! Worth the hype? Kaeser Air Compressor Review Kaeser The CS-102/CS-122 contains one Power LED, two Ready LEDs, and two Port Select LEDs on its front panel. Their indications are as follows: Power LED: Lights when the CPU Switch is running. Ready LED: Lights when the connected PC or CPU Switch is running. Port Select LED: Lights to indicate the currently selected port. The CS121 contains a modern operating system and 70x70 LCD screen capable of displaying graphs and functions at the same time. Its programmable system makes grasping of concepts easy and efficient work for professionals. Functionality Graphic Functionality Generating Graphs, Zoom, Trace, Draw Functions Graph Solving, Built-in Template Graphs You can search for product manuals. You can search using either or both of the following: Please enter the product name (or part) and click "Search." Click the box, select the item you want to search for, then click "Search." With all the functions of a standard graphic calculator the CATIGA CS121 is suitable for students or professionals of any level. The CS121 contains a modern operating system and 70x70 LCD screen capable of displaying graphs and functions at the same time. Its programmable system makes grasping of concepts easy and efficient work for professionals.