KIGAKU vs Excel VBA Standard 問題集

KIGAKU is a visual education app on machine elements and mechanisms. Volume 15 of the "RAKU" series. The "RAKU" series has covered math (SUUGAKU), physics, electricity, waves, heat, stars, light, quantum, fluid, probability, geometry, chemistry, microbes, and brain. Each title makes one discipline tangible by letting you see and move the ideas. KIGAKU does the same for the machines humans have built - from a pair of meshing gears to a 2-link robot arm. While the sister app BUTURAKU covers natural physical phenomena, KIGAKU focuses on engineered mechanisms. [Ten Simulations] - Gear Two meshing spur gears that show how tooth counts change the trade-off between speed and force. Vary Z1, Z2, and the input RPM and watch the speed ratio and torque ratio respond inversely - the bigger gear turns slower, with proportionally more torque. - Pulley A block-and-tackle that lets you lift a load with less force - in exchange for pulling a longer distance. Vary the supporting rope count N (1-6) and see how the required force W/N shrinks while the rope you must pull grows by the same factor, with total work conserved. - Lever Drag the fulcrum and see how a beam trades force for distance. Switch between 1st-, 2nd-, and 3rd-class levers, with the moment balance F1*L1 = F2*L2 holding at every position. - Linkage A four-bar linkage that turns rotation into complex motion. Change the bar lengths and watch how the path changes in real time. The mechanism type - crank-rocker, double-crank, or double-rocker - switches automatically based on Grashof's condition, with the coupler-point curve traced live. - Cam A rotating cam that drives a follower smoothly up and down. Watch how the cam's outline shapes the motion above it - a cycloidal profile gives a particularly smooth ride, with the relation between cam shape and follower motion shown side by side. - Crank The mechanism that turns rotation into back-and-forth piston motion - the heart of every internal combustion engine. Vary the crank radius r and connecting-rod length l and see how the ratio r/l deforms the piston motion away from a pure sine wave (its second-harmonic component). - Screw A power screw / screw jack that converts a small torque into a large thrust - the same principle as car jacks and clamps. Tune the lead L, input torque T, and efficiency η (eta) and read the resulting force F = 2π·T·η/L; a smaller lead means more force, at the cost of speed. - Hydraulic Pascal's principle - a small input force becomes a large output force when fluid pressure is shared across cylinders of different sizes. Vary the input and output piston diameters; the area ratio A2/A1 becomes the force multiplication, with the output stroke shrinking by the same factor - the foundation of construction machines and brakes. - Belt Drive Two pulleys connected by a belt - the speed ratio is simply the diameter ratio D1/D2. The same principle behind bicycle gears and machine spindles. - Robot Arm A 2-link planar robot arm where joint angles decide where the tip goes. Move the shoulder and elbow joints (θ1, θ2) and watch the tip position (x, y) update in real time - the basics of forward kinematics, with the reachable workspace drawn. [Features] - Each screen pairs the simulation with formulas and historical context - Textbook-level implementations of gear ratios, lever moments, Pascal's principle, forward kinematics, and more - Japanese / English UI - Dark / Light mode - Clean, intuitive Material Design 3 UI - Banner ad at the bottom only - no interstitials, no rewarded ads [Who it's for] - Students of mechanical engineering, robotics, and mechatronics - Self-taught engineers refreshing their intuition - Science teachers building visual demonstrations

Excel VBAの応用を、読んで・選んで・書いて身につける問題集アプリです。 「Excel VBA Standard 問題集」は、基礎を終えて実務レベルのマクロを書きたい方のために作成した、全500問のオリジナル問題集です。用語の暗記だけでなく、実際のコードを読み解き、空欄を埋めながら「コードが何をするか」まで理解できます。 【4つの問題形式で、読む力と書く力を鍛える】 ・4択（単一選択）：コードの判別と概念理解を確認 ・複数選択：あてはまるものをすべて選ぶ応用問題 ・コード穴埋め・候補選択：空欄に入るコードを候補から選ぶ ・コード穴埋め・文字入力：空欄に入る語句を自分で入力する 【応用10分類を体系的にカバー】 ・プロシージャ ・変数の活用 ・ステートメント ・ファイルの操作 ・ワークシート関数の利用 ・検索とオートフィルター ・データの並べ替え ・テーブルの操作 ・エラー対策 ・デバッグ 125の分野を1分野4問の短いセットに分け、すきま時間でも取り組みやすくしています。全問に解説を用意し、正解の理由だけでなく、似た命令との違いや失敗時の注意点まで学べます。 【解いてから、まとめて答え合わせ】 回答中は正誤を伏せ、1分野4問を解き終えたところで、問題文・あなたの解答・正解・解説を並べて振り返ります。1問目の正誤が次の問題のヒントにならないため、本番と同じ条件で実力を確かめられます。途中でアプリを閉じても解答は残り、ホーム画面から続きを再開できます。 【学習を支える機能】 ・分野別演習／ランダム出題／間違えた問題だけの復習 ・今日解いた問題数、正解数、全体進捗の表示 ・連続学習日と直近7日間の学習記録 ・分野ブックマークと苦手分野フィルタ ・選択肢はセッションごとにシャッフル ・学習履歴は端末内に保存。アカウント登録は不要 【無料版とプレミアム】 無料版では60問（15分野）を学べます。買い切りのプレミアムを購入すると、全500問と、ランダム出題・誤答復習・分野ブックマーク・苦手分野フィルタなどを、期限なくご利用いただけます。 通勤・通学のすきま時間、業務前の確認、VBA学習の総復習にご活用ください。 ※本アプリはMicrosoft Corporationおよび特定の試験実施団体が提供・公認する公式アプリではありません。 ※収録問題は学習用に独自作成したオリジナル問題です。